U.S. Customs and Border Protection (CBP) officers seized nearly 1,000 counterfeit driver's licenses at the International Mail Facility at O'Hare International Airport between Jan. 21 and Jan. 26.

CBP One, a border app that has allowed nearly 1 million people to legally enter the United States with eligibility to work, was abruptly shut down on Monday, shortly after President-elect Donald Trump took office.

Nearly 500 shipments containing just over 15,000 weapon-modifying devices or Glock switches were recovered by Customs and Border Protection agents in Chicago. The CBP says the majority of the shipments came from China.

Chicago Mayor Brandon Johnson and Chicago Police Supt. Larry Snelling spoke out Tuesday on immigration enforcement in the city.

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 CBP One app has been highly popular, functioning as an online lottery system that grants appointments to 1,450 people daily at eight border crossings. These individuals enter the U.S. under immigration "parole," a presidential authority that Joe Biden has exercised more frequently than any other president since its creation in 1952.

The operation began at a home and later extended to the school grounds.The agency stressed that it only investigates threats, does not enforce immigration laws.

When Dayana Castro heard that the U.S. asylum appointment she waited over a year for was canceled in an instant, she had no doubt: She was heading north any way she could.

After DHS revoked previous guidance for immigration enforcement, we VERIFY if ICE agents can now enter schools, churches and hospitals.

In more than 21 actions, Trump has moved to overhaul parts of the US immigration system, including how migrants are processed and deported from the US. The White House has since publicised some of these efforts. On Friday, the new White House Press Secretary shared images of deportation flights being carried out by military cargo planes.

The Immigrations and Customs Enforcement agency is continuing to crack down on illegal immigration just one week into President Trump’s second term, announcing it conducted almost 1,000 arrests on Sunday in Chicago alone.