The United States Attorney’s Office has a branch office located in the Ronald Reagan Federal Building and United States Courthouse in Santa Ana. The Santa Ana Branch Office investigates and prosecutes federal crimes occurring in Orange County. With over 3 million residents, Orange County is the third largest county in the state of California.
The Assistant United States Attorneys (“AUSAs”) in Santa Ana prosecute a wide variety of criminal matters. A large portion of the branch office’s prosecutions involve economic crimes such as mail and wire fraud, health care fraud, bank and mortgage fraud, securities fraud, investment fraud, money laundering, identity theft and tax evasion. Defendants in other recent prosecutions have been charged with crimes such as public corruption, racketeering, narcotics trafficking, child exploitation, illegal possession of and trafficking in firearms, counterfeiting, and bank robbery. Santa Ana AUSAs also pursue cases involving espionage, theft of trade secrets, smuggling, human trafficking, conspiracy, and fraud against the United States. NSD AUSAs also work in the branch and investigate terrorism related crimes and the illegal export of products and data.
Santa Ana AUSAs investigate and prosecute cases in partnership with agents from a variety of federal law enforcement agencies. The Office works closely with state and local law enforcement, as well as with interagency groups such as the Joint Terrorism Task Force, Orange County Gang Task Force, and Southern California Regional Sexual Assault and Exploitation Felony Enforcement Team.
Dennise Willett is a graduate of the University of California at Berkeley and U.C. Davis King Hall School of Law. AUSA Willett has worked in the United States Justice Department for the last 22 years. After four years as agency counsel, she became an Assistant United States Attorney in the Southern District of California. While in San Diego, AUSA Willett was assigned to the newly-formed Counterterrorism Section and oversaw Operation Game Day, resulting in successful prosecutions of threats to Super Bowl XXXVII. In 2003, AUSA Willett transferred to the Central District of California, Riverside Branch Office, where she prosecuted various crimes including bank fraud, embezzlement, violent crimes, child exploitation, narcotics trafficking and firearms violations. In 2005, AUSA Willett received the Anti-Defamation League’s Sherwood Prize for Combating Hate in recognition of successful prosecutions of white supremacist gang leaders in Yucca Valley. In 2008, AUSA Willett was promoted to Deputy Chief of the National Security Section in Los Angeles. In that capacity, AUSA Willett successfully prosecuted a purported member of the anti-Castro terrorist group, Alpha 66, for stockpiling explosives, machineguns and over 1,600 firearms behind false walls and bookshelves at his personal residence.
In June 2010, AUSA Willett was promoted to Chief of the Santa Ana Branch Office. AUSA Willett oversees federal criminal prosecutions in Orange County and manages day-to-day operations in the Branch. In 2012, AUSA Willett received the Anti-Defamation League’s Sherwood Prize for Combating Hate for prosecuting members of Public Enemy Number One, a white supremacist group in Orange County. In 2013, AUSA Willett successfully tried, convicted, and denaturalized Jorge Sosa for providing false statements to the United States about his participation in the massacre of villagers in Dos Erres, Guatemala. In addition to serving as Branch Chief, from July 2015 to January 2018, AUSA Willett served as Senior Counsel to the United States Attorney.
December 18, 2018
O.C. Doctor Arrested on Federal Narcotics Charges that Allege Prescriptions to ‘Patients’ who Suffered Fatal Overdoses
December 14, 2018
Glendale Attorney Pleads Guilty to Using Client Trust Accounts to Launder More than $500,000 Generated by Tax Fraud Scheme
December 12, 2018
Investigation by Orange County Violent Gang Task Force Leads to Federal Narcotics and Firearms Charges Against 20 Defendants
November 29, 2018
Tax Lawyer Indicted for Obstructing IRS Investigation into Tax Returns that Sought More than $100 Million in Refunds
Section Contact Information
The United States Attorney's Office
Central District of California
Santa Ana Branch Office
411 West 4th Street
Santa Ana, California 92701
(855) 898-3957 (Toll Free)