Meet the D.A.

District Attorney John F. DeRosier

John DeRosier attended undergraduate school at the University of Southwest Louisiana in Lafayette, Louisiana and entered Louisiana State University Law School in 1967. Mr. DeRosier enlisted in the Marine Corp. as a machine gunner during law school, spent 11 months in Vietnam and was awarded the Naval Achievement Medal with Combat “V.” He re-entered law school upon his return to the States.

            As a Lake Charles resident of 38 years, Mr. DeRosier had a law practice that focused on civil litigation, personal injury, and criminal law until his election as District Attorney. He also served as City Attorney for the City of Lake Charles and General Counsel for the Calcasieu Parish Sheriff’s Office.

            Mr. DeRosier currently serves on the Boy Scouts Board of Directors and on the Louisiana Commission on Law Enforcement and Administration of Criminal Justice. He also served as President of the Louisiana District Attorney Association Board for the 2012-2013 term.

Mr. DeRosier took the oath of office for Calcasieu Parish District Attorney on December 20, 2005 and was re-elected to an additional six-year term in 2008. He established the Case Review Team to improve communications with law enforcement and created the Calcasieu Full Force group to target DWI offenders in response to the excessive number of traffic fatalities and a 60% increase in DWI’s. Mr. DeRosier also worked with legislators to pass numerous items of legislation regarding more stringent requirements for sex offenders, in addition to adding the mentally ill to the protected persons’ statute so that they would not be further victimized by the system. He has been pro-active and implemented an aggressive campaign to capture and prosecute online sexual predators. He re-established the Sexual Assault Nurse Examiner Program, assisted in the formation of Adult Drug and DWI Courts, and established the “Fatal Vision” DWI Simulation Program that travels to schools to demonstrate the effects of impaired driving.

During the 2006 Louisiana legislative session, Mr. DeRosier initiated “doctor shopping” legislation to decrease the number of deaths from “pain management” prescription drug overdoses in our young adult population. He was instrumental in organizing a Task Force of Louisiana and Texas legislators, law enforcement, and administrative agencies to combat the proliferation of pain management clinics in Southeast Texas and Louisiana.   Mr. DeRosier has spoken at numerous conferences, as well as the Center for Disease Control in Atlanta and a DEA Pain Clinic Symposium in Nashville on the subject of abuse of prescription pain medications.

In the 2010 Louisiana legislative session, he initiated the toughest felony DWI mandatory minimum sentences in the country. He also received the Louisiana DWI Law Enforcement Award from the Louisiana Highway Safety Commission. 

As District Attorney, Mr. DeRosier :

• established the Case Review Team to improve communications with law enforcement

• created the Calcasieu Full Force program to target DWI offenders.

• worked with legislators to pass several pieces of legislation regarding more stringent requirements for sex offenders and the addition of the mentally ill to the protected persons statute to prevent their victimization by the system.

• proactively implemented an aggressive campaign to capture and prosecute online sexual predators.

• furnished an Assistant District Attorney for the Combined Anti-Drug Task Force to target serious and habitual drug traffickers.

• re-established the Sexual Assault Nurse Examiner program and an adult drug court program.

• opened a part-time District Attorney substation in the Martin Luther King Recreation Center on North Simmons Street.

• instituted the “Fatal Vision” program that travels to schools to dramatically teach the dangers of impaired driving.

• was instrumental in passing “doctor shopping” legislation during the 2007 Louisiana legislative session.