The immigration blitz was action long promised by President Donald Trump who made mass deportation central to his campaign.

With two top Trump administration officials in Chicago, federal law enforcement began a “targeted” immigration blitz Sunday, according to a spokesman for U.S. Immigration and Customs

Enhanced immigration enforcement operations were reported in Chicago and parts of Illinois starting on Sunday and were expected to continue through the week as federal agencies touted arrests around the country.

The number of arrests there was uncertain. Illinois officials, including the governor, said they had not been given advance notice.

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

The North Texas-based TV host was embedded with U.S. immigration enforcement officers during an operation in Chicago Sunday.

The Trump administration launched an immigration enforcement blitz in Chicago on Sunday that includes several federal agencies that have been granted additional authorities to arrest undocumented immigrants in the US,

A top Department of Justice (DOJ) official and President Trump’s “border czar” were in Chicago overseeing “immigration enforcement efforts,” according to officials. “The DEA, along with our

CHICAGO (WLS) -- U.S. Immigration and Customs Enforcement agents were spotted on the ground in the Chicago area as the agency said "targeted operations" are underway Sunday. New video shows ICE and other federal agents knocking on doors and making arrests in the city.

Acting Deputy Attorney General Emil Bove, appointed by President Donald Trump, will oversee the efforts of the FBI, DEA, ATF, U.S. Marshall Service, and federal prosecutors.

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.