The corruption trial of former Oakland Mayor Sheng Thao took a tense turn on Friday, November 6, 2026, as a key prosecution witness faced aggressive questioning about his financial history, business dealings, and credibility.
Mario Juarez, who pleaded guilty to conspiracy to commit bribery and agreed to cooperate with federal prosecutors, spent his first full day of cross-examination answering questions from defense attorney Ed Swanson. The attorney challenged Juarez’s honesty, pointing to alleged misconduct in previous business dealings, bounced checks, financial disputes, and accusations that he had taken money from others.
The courtroom exchanges became increasingly confrontational, placing the prosecution’s central witness under significant pressure. Juarez occasionally gave combative responses, while the judge repeatedly intervened to keep the questioning focused.
The testimony is important because prosecutors rely heavily on Juarez to explain the alleged corruption arrangement involving Thao, her longtime partner Andre Jones, and Oakland businessmen David Duong and Andy Duong.
The defense is attempting to persuade jurors that Juarez cannot be trusted, particularly because he hopes to receive a lighter sentence in exchange for cooperating with the government. However, the allegations against the defendants remain matters for the jury to decide.
Why Mario Juarez Is a Key Witness in the Oakland Corruption Trial
Mario Juarez is a central figure in the federal corruption case involving former Oakland Mayor Sheng Thao.
Before becoming a cooperating witness, Juarez worked with David and Andy Duong through Evolutionary Homes, a business that promoted prefabricated modular housing solutions, including shipping-container homes intended to address homelessness.
Federal prosecutors allege that the business relationships developed into an improper arrangement involving political support, financial benefits, and promised assistance from Oakland’s mayoral administration.
According to the government’s allegations, the defendants participated in a scheme intended to benefit the Duongs’ businesses in exchange for financial and political advantages connected to Thao and Jones.
Juarez has admitted his involvement in a bribery conspiracy by pleading guilty. He is now testifying for the prosecution as part of his cooperation agreement.
His testimony could help prosecutors connect business communications, payments, political activities, and alleged agreements involving the defendants.
However, his guilty plea also gives the defense an opportunity to question his motives and whether his account should be trusted.
Defense Attorney Questions Juarez’s Business History
Friday’s courtroom proceedings focused heavily on Juarez’s previous financial and business activities.
David Duong’s attorney, Ed Swanson, questioned the witness about alleged dishonesty in real estate transactions, bounced checks, and accusations involving money taken from business associates.
The defense sought to establish that Juarez had a history of questionable financial behavior and that jurors should carefully examine his statements.
Juarez was sometimes combative during the questioning. Rather than simply agreeing with the attorney’s characterization of events, he challenged questions and disputed aspects of the defense’s presentation.
One of the central issues was whether Juarez had previously misrepresented financial transactions or taken advantage of business relationships.
The defense’s strategy is significant because the prosecution needs jurors to believe that Juarez’s testimony accurately describes the alleged corruption arrangement.
If jurors develop substantial doubts about his credibility, that could affect how they evaluate the government’s broader case.
Juarez’s Plea Agreement Becomes a Major Issue
Another important part of the cross-examination involved Juarez’s agreement with federal prosecutors.
Juarez pleaded guilty to conspiracy to commit bribery and agreed to provide testimony against the other defendants. In return, he hopes the government will consider his cooperation when his sentence is determined.
The defense argues that this arrangement gives him a powerful reason to provide testimony that supports the prosecution.
Swanson questioned whether Juarez was using his information as leverage in negotiations with the federal government.
Juarez rejected that characterization, saying he had information rather than leverage.
The distinction matters because cooperating witnesses can receive sentencing benefits, but their testimony must still be evaluated based on the evidence and their credibility.
A plea agreement does not automatically make a witness unreliable. However, it gives defense attorneys an important reason to investigate whether the witness has exaggerated, changed, or selectively presented information.
What Prosecutors Allegedly Say About the Bribery Scheme
The federal corruption case centers on allegations that Sheng Thao used her position as Oakland mayor to benefit businesses connected to David and Andy Duong.
The Duong family has business interests in California Waste Solutions, a company involved in Oakland’s residential recycling services. The family was also connected to Evolutionary Homes, the modular housing company that worked with Juarez.
According to the federal indictment, the alleged arrangement involved political support and financial benefits in exchange for official actions that could help the Duongs’ businesses.
Prosecutors have described an alleged pay-to-play arrangement involving housing contracts, recycling business interests, campaign-related activities, and payments connected to Andre Jones.
The government alleges that the defendants sought favorable treatment from Oakland’s city administration.
The defense, however, disputes the prosecution’s interpretation of the relationships and evidence. The defendants have pleaded not guilty, and prosecutors must prove the charges beyond a reasonable doubt.
The case is being heard in federal court in Oakland, California.
The Alleged Payments and Modular Housing Deal
One of the most important parts of the prosecution’s case involves Evolutionary Homes and its efforts to sell modular housing units to the City of Oakland.
Prosecutors allege that the business relationship was connected to promises of financial benefits for Thao’s longtime partner, Andre Jones.
Juarez testified about an alleged arrangement under which Jones would receive payments connected to potential housing sales.
During earlier testimony, Juarez described a proposed payment of $10,000 for each home sold to the city. He also discussed an alleged $300,000 arrangement involving Jones.
The prosecution has presented communications and other evidence to support its account of the alleged deal.
The defense is challenging whether these arrangements demonstrate criminal conduct and whether Juarez’s description can be trusted.
The distinction between a proposed business arrangement and a proven criminal agreement is important. Jurors must determine whether the evidence establishes the elements of the charges.
Why the Defense Is Focusing on Juarez
The defense’s decision to closely examine Juarez reflects his importance to the prosecution.
He was involved in the business relationships at the center of the case and has firsthand knowledge of several alleged discussions and transactions.
At the same time, his cooperation agreement creates questions about his personal interests.
Defense attorneys want jurors to consider whether his testimony reflects an accurate account of events or whether personal disputes and sentencing considerations have influenced his statements.
The questioning also highlights the difficult position of a cooperating witness who has admitted criminal involvement but is now helping prosecutors build a case against former associates.
Former Oakland Mayor Sheng Thao and the Federal Charges
Sheng Thao served as Oakland’s mayor before being recalled by voters in November 2024.
She became widely known as the first Hmong American woman elected mayor of a major U.S. city.
Her administration later became the subject of a federal investigation involving alleged bribery and corruption.
On January 17, 2025, the U.S. Department of Justice announced that an eight-count indictment had been unsealed against Thao, Andre Jones, David Duong, and Andy Duong.
The indictment alleged that Thao promised official actions benefiting the Duongs in exchange for various benefits for herself and Jones.
The charges include conspiracy, bribery-related offenses, and honest-services mail and wire fraud. Andy Duong also faces a separate charge involving alleged false statements to federal investigators.
All four defendants have pleaded not guilty.
The federal indictment is an accusation, not proof of guilt. Each defendant is entitled to the presumption of innocence unless the government proves the charges beyond a reasonable doubt.
What Happened During Friday’s Courtroom Testimony?
Friday’s cross-examination produced several tense exchanges between Juarez and Swanson.
According to reporting by KTVU, the defense attorney questioned Juarez about his previous financial dealings and challenged his truthfulness. The witness sometimes pushed back against the attorney’s questions, making the courtroom exchanges increasingly heated.
Juarez also faced questions about his relationship with the Duong family and the breakdown of their business partnership.
The relationship became especially relevant after Juarez described an alleged physical confrontation in May 2024. He testified that a group of people assaulted him and stole personal belongings, including a watch and a gold chain that had belonged to his late father.
Juarez said he reported the incident to Oakland police. The government has also presented evidence concerning items allegedly recovered during a federal search.
The defense has questioned Juarez’s motives and suggested that his personal conflict with the Duong family could have influenced his decision to cooperate with investigators.
These issues are important because jurors must evaluate not only what Juarez says but also the circumstances surrounding his cooperation and the supporting evidence.
What Happens Next in the Oakland Corruption Trial?
Juarez’s cross-examination is expected to continue on Monday, November 9, 2026, at the Ronald V. Dellums Federal Building and United States Courthouse in Oakland.
The defense teams have an opportunity to question the prosecution’s witness about his statements, business history, financial transactions, and relationship with the other defendants.
The government may also have an opportunity to ask additional questions after the defense finishes its cross-examination.
The trial is attracting attention because the allegations involve a former mayor, major local business interests, and claims about the use of public office for private benefits.
The jury will ultimately decide whether the prosecution has established the charges against each defendant.
For now, Juarez’s testimony remains one of the most closely watched parts of the proceedings.
Why This Trial Matters for Oakland Residents
The federal corruption trial has consequences beyond the courtroom because it concerns public trust in local government.
Oakland residents depend on elected officials to make decisions about public spending, homelessness programs, recycling services, and city contracts.
When allegations involve possible exchanges of political influence for private financial benefits, they raise important questions about transparency and accountability.
The Evolutionary Homes allegations are particularly significant because Oakland has faced continuing challenges related to homelessness and the need for affordable housing solutions.
Any suggestion that public contracts or housing decisions were influenced by private financial arrangements deserves careful examination.
However, it is equally important to distinguish between allegations and proven wrongdoing. The defendants have not been found guilty simply because prosecutors presented an indictment or because a cooperating witness testified against them.
The jury’s assessment of the evidence will determine the outcome.
Latest Update: Key Developments in the Sheng Thao Corruption Trial
As of November 7, 2026, the major developments include:
- Mario Juarez’s cross-examination: The prosecution’s key witness faced extensive questioning from defense attorney Ed Swanson on Friday.
- Credibility challenges: The defense questioned Juarez about previous business dealings, alleged financial misconduct, and his truthfulness.
- Cooperation agreement: Juarez has pleaded guilty to conspiracy to commit bribery and hopes his cooperation will help him receive a lighter sentence.
- Alleged business arrangement: Prosecutors say the defendants participated in an arrangement involving political support, financial benefits, and potential city business.
- Defendants’ position: Sheng Thao, Andre Jones, David Duong, and Andy Duong have pleaded not guilty.
- Next court appearance: Juarez is expected to return to the witness stand on Monday, November 9.
The next stage of questioning could further clarify the defense’s arguments about Juarez’s reliability and the prosecution’s response to those challenges.
Frequently Asked Questions (FAQs)
1. Why was Mario Juarez questioned in the Oakland corruption trial?
Mario Juarez was questioned because he is a key prosecution witness in the federal corruption case involving former Oakland Mayor Sheng Thao. He pleaded guilty to conspiracy to commit bribery and agreed to cooperate with federal prosecutors.
2. Who is Sheng Thao?
Sheng Thao is the former mayor of Oakland, California. She served as mayor before voters recalled her in November 2024. She is facing federal corruption charges connected to an alleged bribery scheme.
3. Who is Mario Juarez?
Mario Juarez is an Oakland businessman and political operative who previously worked with David and Andy Duong through Evolutionary Homes. He later became a cooperating witness in the federal investigation.
4. What did the defense attorney ask Juarez?
Defense attorney Ed Swanson questioned Juarez about his previous business dealings, financial disputes, alleged dishonesty, bounced checks, and credibility as a cooperating witness.
5. Why does the defense say Juarez may not be reliable?
The defense argues that Juarez has a history of questionable business dealings and a personal interest in helping prosecutors because he hopes to receive a lighter sentence under his cooperation agreement.
6. What are the charges against Sheng Thao?
The federal indictment includes charges involving conspiracy, bribery-related offenses, and honest-services mail and wire fraud. The charges concern an alleged arrangement involving Thao, her longtime partner, and two local businessmen.
7. Who are the other defendants in the case?
The other defendants are Andre Jones, Thao’s longtime partner, and businessmen David Duong and Andy Duong.
8. Did Sheng Thao plead guilty?
No. Thao and the other three defendants have pleaded not guilty. The government must prove the charges beyond a reasonable doubt.
9. When will Mario Juarez testify again?
According to the November 6 courtroom reporting, Juarez is expected to return for further cross-examination on Monday, November 9, 2026.
10. Why is the Oakland corruption trial important?
The trial concerns allegations that public office and city business decisions were improperly connected to private financial and political benefits. Its outcome could have important implications for public confidence in Oakland’s local government.
Final Takeaway
The Oakland ex-mayor corruption trial entered another important phase on November 6 as defense attorneys aggressively challenged Mario Juarez’s credibility.
His testimony is central to the prosecution’s allegations against former Mayor Sheng Thao, Andre Jones, and businessmen David and Andy Duong. However, his guilty plea and cooperation agreement have also created opportunities for the defense to question his motives and reliability.
As cross-examination continues on November 9, jurors will have to evaluate Juarez’s statements alongside the documentary evidence, financial records, witness accounts, and arguments presented by both sides.
The case remains ongoing, and all four defendants are presumed innocent unless proven guilty in court.