On Monday, Mayor Brandon Johnson received a letter from Washington, D.C., that states, in summary, that Chicago and other cities like it — notably Denver, New York and Boston, all of which hold sanctuary city status like Chicago — are being investigated by the U.S. House Committee on Oversight and Government Reform.

In a display of force aimed at increasing arrests and generating publicity, the administration targeted the nation’s largest city, where sanctuary policies limit cooperation with ICE.

President Donald Trump's top homeland security official joined officers as they carried out an immigration arrest in New York City on Tuesday, the latest effort to promote Trump's nationwide crackdown as enforcement has intensified in recent days.

Newly sworn-in Homeland Security Secretary Kristi Noem rode along as federal agents raided a Bronx apartment building on Tuesday. One target was an alleged Venezuelan gang member, sources said.