Freddie Fender Verified Attorney
Diane C. Bass
Criminal Defense · DUI / DWI Defense
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Freddie's Review
The Government Had the Punch on Video—Diane C. Bass Still Won a Not-Guilty Verdict
On paper, Luis Hipolito’s case appeared brutally simple: prosecutors had video of him striking a federal immigration officer. He faced as many as 20 years in prison. But a recording can capture an act without revealing everything that caused it. Diane C. Bass and her co-counsel widened the frame, showing jurors how the officer had escalated the encounter and used force before Hipolito responded. After approximately four hours of deliberation, the jury returned its verdict: not guilty.
That ability to take apart a seemingly straightforward prosecution rests on nearly three decades in federal criminal court. Bass began her defense career in the Public Defender’s Office, completing 24 trials in her first 24 months. She later joined a federal court panel that appoints private attorneys to represent people who cannot afford counsel. The work placed her inside cases involving MS-13, the Mexican Mafia, potential death sentences, and an Aryan Brotherhood prosecution. It also taught her how federal agents investigate, how prosecutors construct charges, and what judges expect from attorneys appearing before them.
Bass eventually founded the Law Office of Diane C. Bass, which remains a solo practice. For clients, that structure offers unusual clarity about who is responsible for the case. The lawyer who examines the evidence and develops the strategy is also the lawyer who answers the client’s questions and stands beside that person in court. There is no chain of associates separating the client from the attorney whose name is on the door.
Her results demonstrate strength at both ends of a criminal case: challenging the government’s evidence and limiting the consequences when a conviction cannot be avoided. She secured an acquittal for a federal drug defendant facing a mandatory minimum of 10 years. In a racketeering-conspiracy matter carrying potential life imprisonment, her client received seven days in custody. She also obtained dismissal of the fraud charges in a $22 million health-care case, leaving the client with probation after pleading to attempted obstruction of justice.
That sentencing judgment was tested under international attention when Bass represented Mathew Bowyer, the bookmaker connected to the scandal involving Shohei Ohtani’s former interpreter. Bowyer pleaded guilty to operating an illegal gambling business, money laundering, and filing a false tax return. Although probation officials recommended three years in prison, Bass secured a sentence of 12 months and one day.
Her command of criminal law has also made Bass a sought-after legal commentator when major cases place complicated legal questions before the public. She has appeared on ABC, CBS News, NBC News, CNN, Fox, KTLA, and Court TV, explaining criminal investigations, courtroom developments, and the consequences defendants may face. Her analysis has also been quoted by the Associated Press, Los Angeles Times, The Washington Post, ESPN, Forbes, and The Wall Street Journal. She brings that same knowledge back to the legal profession by teaching other attorneys about federal sentencing and criminal-defense strategy.
Her professional standing is further supported by selection to Southern California Super Lawyers every year from 2022 through 2026, service on the board of Innocence OC, and an impressive 5.0-star Google rating based on 88 reviews for her Irvine practice.
The Hipolito verdict captures what separates Bass. The government possessed a powerful piece of evidence, but she understood that one dramatic moment was not the entire case. For someone facing a federal investigation or serious criminal charge, there is meaningful value in having the same experienced attorney examine the evidence, uncover the missing context, and personally carry that defense into court.
That combination of experience, reputation, verified professional standing, and public credibility is why Diane C. Bass was included on FreddieFender.com.
Credentials
- Juris Doctor, with honors, Southwestern University School of Law, 1991
- Bachelor’s degree in Drama, with honors, University of California, Irvine, 1983
- Admitted to the United States District Court for the Central District of California
- Admitted to the United States District Court for the Northern District of California
- Admitted to the United States District Court for the Eastern District of California
- Admitted to the United States District Court for the Southern District of California
- Member of the National Association of Criminal Defense Lawyers
- Member of California Attorneys for Criminal Justice
- Member of the Federal Bar Association
- Member of the Orange County Bar Association
- Member of the Orange County Women Lawyers Association
- Member of the Harbor Bar Association
Career Highlights / Proven Experience
Career Highlights
- Firm Founder and Direct-Access Solo Practitioner: Founded the Law Office of Diane C. Bass and has operated as a solo practitioner for nearly three decades. Bass personally prepares her clients’ cases and appears beside them in court rather than passing responsibility to associates.
- Nearly Three Decades in Federal Court: Has defended federal criminal cases involving white-collar fraud, drug conspiracies, money laundering, tax offenses, illegal bookmaking, organized-crime allegations, and assaults on federal officers.
- Former Public Defender: Completed 24 trials during her first 24 months in the Public Defender’s Office, developing intensive courtroom experience early in her criminal-defense career.
- Federal Court Appointment Experience: After entering private practice, Bass was appointed to a federal defense panel and handled matters involving MS-13, the Mexican Mafia, death-penalty allegations, and an Aryan Brotherhood prosecution.
- Thousands of Criminal Cases Handled: Has represented clients in thousands of state and federal matters, including cases involving federal agencies such as the Federal Bureau of Investigation, Internal Revenue Service, Drug Enforcement Administration, Department of Homeland Security, and Bureau of Alcohol, Tobacco, Firearms and Explosives.
- High-Profile Federal Representation: Represented bookmaker Mathew Bowyer from the initial federal raid through sentencing in the internationally followed case connected to former Shohei Ohtani interpreter Ippei Mizuhara.
- Professional Leadership: Serves on the board of Innocence OC, served as president of the South Orange County Bar Association from 2003 to 2004, and formerly chaired the Orange County Bar Association’s Lawyer Well-Being Committee.
- Legal Educator and Community Contributor: Has lectured attorneys on federal sentencing, federal criminal practice, social-media ethics, and handling the press in high-profile cases. She has also coached and judged student mock-trial programs.
- National Media Legal Analyst: Has appeared as a legal commentator on ABC, CBS News, NBC News, CNN, Fox, KTLA, and Court TV and has been quoted by the Associated Press, Los Angeles Times, The Washington Post, ESPN, Forbes, and The Wall Street Journal.
- Sustained Professional Recognition: Selected to Southern California Super Lawyers each year from 2022 through 2026.
- Exceptional Client Feedback: Maintains an impressive 5.0-star Google rating based on 88 reviews for her Irvine practice.
Proven Experience
- Not-Guilty Verdict in Federal Assault Trial: Represented Luis Hipolito, who faced as many as 20 years in federal prison after being accused of assaulting an immigration officer during a Los Angeles enforcement operation. A federal jury returned a not-guilty verdict after approximately four hours of deliberation.
- Not-Guilty Verdict in Federal Drug Case: Secured an acquittal for a client charged with possession with intent to distribute who faced a mandatory minimum sentence of 10 years in federal prison.
- Life Exposure Reduced to Seven Days: Represented a client facing the possibility of life imprisonment in a federal racketeering-conspiracy case. The client was sentenced to seven days in custody.
- Major Bookmaking Sentence Reduced: Represented Mathew Bowyer after he pleaded guilty to operating an illegal gambling business, money laundering, and filing a false tax return. Although probation officials recommended three years in prison, Bowyer received a sentence of 12 months and one day.
- $22 Million Health-Care Fraud Charges Dismissed: Represented a client facing an estimated 97 to 121 months in federal prison. The fraud charges were dismissed, and the client pleaded to attempted obstruction of justice and received probation.
- $150,000 Wire-Fraud and Embezzlement Charges Dismissed: Obtained dismissal of federal charges for a client who had faced as many as 21 months in prison.
- One Day of Imprisonment in $50 Million Immigration-Fraud Matter: Represented a client suspected of involvement in $50 million in immigration fraud. The client received one day of imprisonment followed by three years of supervised release.
- Six-Year Prison Offer Replaced by Home Confinement: In a $15 million COVID-relief-fraud matter, Bass represented a client who had been offered six years in state prison. The court instead imposed one year of home confinement.
- Ten-Year Drug Sentence Reduced to Time Served: Represented a client facing a 10-year mandatory minimum sentence for drug trafficking. The client received six months with credit for time served and was released that evening.
- $3 Million Tax-Evasion Sentence Reduced: Represented a client facing 41 months in federal prison and secured a six-month sentence.
- Probation Secured in Federal Bank-Fraud Case: Represented a client facing an estimated 27 to 33 months in prison in a bank-fraud matter involving an alleged $62,000 loss. The client received probation.
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