Some of Trump’s actions have taken effect immediately. Others are facing legal challenges or will require additional funding.

The Trump administration launched an immigration enforcement blitz nationwide Sunday that included multiple federal agencies and resulted in the arrest of nearly 1,000 people, according to Immigration and Customs Enforcement.

The Democratic Party has so far been splintered in responding to President Donald Trump’s push against illegal immigration

President Trump began his immigration crackdown with a flurry of executive orders. Immigration experts say they lay out how he hopes to transform enforcement at the southern U.S. border and beyond.

Top Trump administration officials, including “border czar” Tom Homan and the acting deputy attorney general, visited Chicago on Sunday to witness the start of ramped-up

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 Enforcement. The agency did not say how many arrests have taken place so far.

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