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The Inspector General has the authority to appoint all staff members, and all OIG staff serves at the will of the Inspector General.The OIG strives to reflect the diversity of our great community. The OIG staff is 44% female, 18% black, 29% Hispanic and 6% Asian. The Inspector General is committed to recruiting qualified employees who reflect the makeup of Miami-Dade County.

OIG Staff


Mary Cagle

Mary T. Cagle
Inspector General

Mary Cagle’s appointment to the position of Inspector General was confirmed by a unanimous vote of the Miami-Dade Board of County Commissioners on December 17, 2013. She began her four-year term on February 3, 2014. She serves as the Inspector General for Miami-Dade County and the Miami-Dade County School District.

Ms. Cagle’s career includes many years of leadership and distinguished service at the Office of the State Attorney for the Eleventh Judicial Circuit. Her twenty-two year career focused on the litigation and management of major investigations and prosecutions related to Public Corruption and Organized Crime. While serving as the Chief Assistant to the State Attorney she supervised Special Prosecutions, including litigation involving corruption, narcotics, gangs, economic crime, organized crime, racketeering, and money laundering. Ms. Cagle also supervised a large staff of felony attorneys; engaged in high profile communications with law enforcement, the judiciary, and the community; and supervised all cases involving electronic surveillance.

In 2004, Ms. Cagle was recruited to be the Chief Executive Officer for CHARLEE Homes for Children. Ms. Cagle transitioned CHARLEE to a full case management foster care agency, as the State was privatizing the foster care system in Florida. CHARLEE, a non-profit organization, had a budget of $17 million dollars and a staff of 175 dedicated professionals serving 1,000 abused, neglected and abandoned children.

From September 2007 to December 2013, Ms. Cagle was the Statewide Director of Children’s Legal Services for the Department of Children and Families. She was tapped by Bob Butterworth, Secretary of the Department, to raise the quality of legal services. She provided leadership and oversight to a staff of 450 individuals, including 250 attorneys, and managed a $40 million dollar budget. Her responsibilities included providing legal advice to investigators and managing all of the litigation in Florida’s dependency system.

Ms. Cagle received her Juris Doctor degree from Thomas M. Cooley Law School in Lansing, Michigan and attained her Bachelor of Arts Degree in History from Calvin College in Grand Rapids, Michigan. Ms. Cagle is a member of the Michigan and Florida Bar Associations.

Felix Jimenez

Felix Jimenez
Assistant Inspector General, Investigations

Felix Jimenez is the Assistant Inspector General for Investigations. He has been with the OIG since February 2009. He supervises a staff of 17, including investigators and analysts.

Mr. Jimenez is a 28-year veteran of the Miami-Dade Police Department, where he served ten years supervising homicide investigations and was later tasked with developing the department’s Public Corruption Investigations Unit. He has taught at law enforcement agencies throughout the United States, including the South Florida Metropolitan Police Institute and at the FBI Academy, in the areas of Public Corruption Investigation and Violent Crime Investigation.

As a supervisor in the Homicide Bureau, Mr. Jimenez participated in over 500 death investigations and was directly involved in numerous high profile investigations, such as the Tamiami Strangler, the Jimmy Ryce case, ValuJet 592, and the Griga/Furton murders. In the infamous Griga/Furton case, two Hungarian nationals were kidnapped, murdered, and their bodies dismembered, placed in barrels, and disposed of in the Everglades. The 2013 movie Pain and Gain was based on the Griga/Furton case.

While in the Public Corruption Unit, Mr. Jimenez supervised investigations involving government employees, contractors, and elected officials. He was later selected to supervise a task force consisting of FBI, state and local law enforcement agents. Mr. Jimenez was instrumental in several criminal investigations revolving around a $5 billion capital improvement project at Miami International Airport. These multiple cases resulted in the arrest and conviction of the Aviation Department’s assistant director, its telecommunications manager, several corporate officers, and an elected official. Mr. Jimenez also supervised a multi-agency investigation into a drug trafficking organization operating out of the Turner Guilford Knight Correctional Facility that resulted in the arrests and convictions of 43 individuals, including 14 corrections officers.

Mr. Jimenez received his Bachelor of Public Administration degree from Barry University in Miami Shores, Florida. He received his certification as a Certified Inspector General Investigator in 2011.

James Rosenberg

James H. Rosenberg
Assistant Inspector General, Audit

James Rosenberg is the Assistant Inspector General for Audit, and joined the OIG in May 2015.  He supervises a staff of nine, including an Audit Manager, Audit Supervisor, and seven Auditors.
Mr. Rosenberg began his Miami-Dade County career in 1983, and has a broad range of audit, financial, and information technology (IT) experience.  He has expertise in operational and financial analysis, risk assessment and controls, compliance and quality assurance, strategic planning, business process improvement, and IT systems. Prior to joining the OIG, Mr. Rosenberg spent the first 16 years of his County tenure with Miami-Dade Transit, followed by another 16 years with the Audit and Management Services Department.

As a Senior Systems Analyst at Miami-Dade Transit, Mr. Rosenberg managed a technical staff of Analysts and Programmers in developing complex, computerized decision-support systems.  He also provided operational analysis, auditing, and consulting support to the Bus, Rail, and Facilities Maintenance Divisions.  Additionally, Mr. Rosenberg redesigned and managed the Bus Preventive Maintenance program, improving performance and reliability, and reducing service interruptions.

While serving as EDP Audit Manager at Audit and Management Services, Mr. Rosenberg established the EDP Audit function to promote effective use of IT assets in furthering County business objectives. He managed all operational, financial, IT, and compliance audits of Miami-Dade County’s Water and Sewer, Information Technology, and Elections Departments. Under Mr. Rosenberg’s guidance, EDP Audit also focused on IT strategy and information security, as well as data integrity and reliability assurance.

Mr. Rosenberg earned a Master of Accounting degree from Florida Atlantic University in Boca Raton, Florida, and a Bachelor of Arts degree in Political Science from the University of South Florida in Tampa, Florida. He is a Certified Information Systems Auditor, and a member of the Institute of Internal Auditors (IIA), Association of Certified Fraud Examiners (ACFE), Information Systems Audit and Control Association (ISACA), and Phi Kappa Phi Academic Honor Society.

Patra Liu

Patra Liu
General Counsel

Patra Liu has been with the OIG since 2000 and has been serving as its General Counsel since that time. As the Inspector General’s chief legal advisor, she serves by providing independent legal advice on both procedural and substantive matters within the jurisdiction of the office.  She heads the Legal Unit, which includes three attorneys and two contract oversight specialists. Her current responsibilities include implementing prospective contract oversight priorities, monitoring current and ongoing contractor performance, and conducting quality assurance assessments on all OIG reports.  Ms. Liu has also held the position of Assistant IG for Audit and Contract Oversight (concurrent with the position of Legal Counsel from 2002 to 2014) and was the OIG’s Interim Inspector General from April 2013 to January 2014.

Before joining the OIG, Ms. Liu was a white collar fraud prosecutor working in the Economic Crimes Unit of the Miami-Dade State Attorney’s Office. She was also an Assistant Attorney General in the Medicaid Fraud Control Unit directly prior to joining the OIG.  Ms. Liu received both her Juris Doctor and Bachelor of Arts degrees from the University of Washington in Seattle, Washington. She is a member of the Florida and Washington State Bar Associations. Ms. Liu became a Certified Inspector General in 2003 and earned the designation of Certified Inspector General Auditor in 2009. Both certifications are accorded by the Association of Inspectors General (AIG), a national organization.  Ms. Liu has been an active member of the national inspector general community and has been a Board member of the AIG since 2006.  She recently was voted into the national AIG leadership position of Third Vice-President, and is also a Board member of the Florida Chapter of the AIG.


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