Former President Joe Biden spent four years suing Republican-led states over border crackdowns that defied his federal policy. Now, President Donald Trump is turning the tables — taking sanctuary states and cities to court in an attempt to force compliance with his own federal immigration enforcement.

Last week, the Trump administration filed a lawsuit against Illinois, Chicago, and Cook County, challenging local laws that limit cooperation with federal immigration authorities. The administration argues that these sanctuary policies obstruct federal enforcement efforts and prevent agencies such as U.S. Immigration and Customs Enforcement from carrying out their duties effectively.