Top Trump administration officials visited Chicago on Sunday to witness the start of ramped-up immigration enforcement in the nation’s third-largest city as federal agencies touted arrests around the country.

Targeted immigration enforcement operations by multiple agencies were launched in Chicago Sunday, with top Trump administration officials in the city to oversee the operation.Multiple sources told CBS News Chicago that those held by ICE Sunday have active warrants.

Trump border czar Tom Homan and TV personality Dr. Phil are in the city to observe the operations, according to reports.