Acting U.S. Deputy Attorney General Emil Bove and Border Czar Tom Homan oversaw immigration enforcement efforts in Chicago on Sunday, as efforts got underway across the country.

Secretary of Homeland Security Kristi Noem was in New York as immigration raids occurred. At least four people were taken into custody, according to sources. CBS News' Jason Allen reports on deportation flights,

The Trump administration authorized federal immigration authorities to target schools and churches, revoking a policy that barred arrests in "sensitive" areas, DHS said.

U.S. Immigration and Customs Enforcement ( ICE) announced Sunday that it has launched coordinated "targeted operations" in Chicago, in partnership with several federal agencies, to enforce immigration laws and "preserve public safety and national security."

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.

When it comes to immigration, which normally falls under the Department of Homeland Security, Kristi Noem would take direction from two other people, sources tell NBC News.

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

DHS Secretary Noem rode alongside federal agents targeting a high-profile Venezuelan gang member during immigration enforcement in the Bronx.

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.

Homeland Security Secretary Kristi Noem joined federal agents in New York City to announce the arrests of immigrants wanted on criminal charges.

Top Trump administration officials visited Chicago on Sunday to witness the start of ramped-up immigration enforcement in the nation’s third-largest city