Donald Trump's border czar on Thursday blamed news media leaks for hindering a large-scale operation in a Denver suburb the president has held up in his efforts to link violent crime with immigration.

Officers from several U.S. federal agencies searched for illegal immigrants on Wednesday in Aurora, the Colorado city with a large migrant population where President Donald Trump laid out his immigration policies during his campaign.

President Donald Trump has quickly mobilized wide swaths of the federal government to arrest and detain undocumented immigrants in the United States, part of a broader strategy to amass a large enforcement machine.

The federal lawsuit is the first by Trump's Justice Department against states or municipalities that have sanctuary city policies.

The federal lawsuit filed Thursday in U.S. District Court in Chicago claims sanctuary policies in Illinois that keep local authorities from cooperating with the deportation effort are “exacerbating” a crisis at the U.

The U.S. Department of Justice is suing the State of Illinois and the City of Chicago, alleging that sanctuary status is obstructing federal immigration enforcement. Charlie De Mar reports.

The Trump administration filed a lawsuit against Chicago, Cook County and the state of Illinois for sanctuary policies that restrict