In January 2003, Obama became chairman of the Illinois Senate's Health and Human Services Committee when Democrats, after a decade in the minority, regained a majority. He sponsored and led unanimous, bipartisan passage of legislation to monitor racial profiling by requiring police to record the race of drivers they detained, and legislation making Illinois the first state to mandate videotaping of homicide interrogations. During his 2004 general election campaign for the U.S. Senate, police representatives credited Obama for his active engagement with police organizations in enacting death penalty reforms. Obama resigned from the Illinois Senate in November 2004 following his election to the U.S. Senate. 1.4.2 2004 U.S. Senate campaign. Main article: 2004 United States Senate election in Illinois.