Trump admin updates: White House officials hold prayer vigil for Charlie Kirk

The Pentagon’s top two officials were in Puerto Rico on Monday visiting with U.S. troops operating in a key area of the Trump administration’s operations against South American drug cartels.

Secretary Pete Hegseth and Gen. Dan Caine, chairman of the Joint Chiefs of Staff, were greeted by Puerto Rico Gov. Jenniffer González-Colón, who posted photos of their arrival on her social media account. After speaking to some U.S. military personnel at an undisclosed airstrip, they traveled to the USS Iwo Jima amphibious assault vessel, which is located off the southeast coast of Puerto Rico and carries MV-22 Ospreys, AV-8 Harrier jets, and 2,200 Marines.

The three-ship USS Iwo Jima amphibious ready group are some of the eight vessels that have been made available to U.S. Southern Command for counter-cartel operations. The Iwo Jima and the other two ships are participating in an exercise off Puerto Rico.

Reuters published a recent photo of an MQ-9 Reaper drone armed with Hellfire missiles as it taxied on a runway at the airport in Aguadilla, which is located on the western part of Puerto Rico. It is believed the boat targeted by a U.S. airstrike last week in the Caribbean may have been struck by a missile fired from a drone like the MQ-9 Reaper.

-ABC News’ Luis Martinez

Illinois Gov. JB Pritzker responded to ICE beginning an expanded operation in Chicago on Monday.

"Once again, this isn't about fighting crime. That requires support and coordination -- yet we've experienced nothing like that over the past several weeks," Pritzker wrote on X. "Instead of taking steps to work with us on public safety, the Trump Administration's focused on scaring Illinoisians."

A spokesperson for Pritzker also said that the governor's office "has received no formal communication or information from the Trump Administration" about the operation and is learning about any developments over social media.

-ABC News' Isabella Murray

The Department of Homeland Security announced on Monday that U.S. Immigration and Customs Enforcement (ICE) has begun an expanded immigration operation in Chicago.

The crackdown, dubbed "Midway Blitz," will "target the criminal illegal aliens who flocked to Chicago and Illinois because they knew Governor Pritzker and his sanctuary policies would protect them and allow them to roam free on American streets," according to a DHS press release.

The move comes as President Donald Trump repeatedly threatens to send troops to Chicago to take on crime.

President Donald Trump's removal of Rebecca Slaughter, a Democratic member of the Republican-majority Federal Trade Commission, is now under review by the U.S. Supreme Court.

Chief Justice John Roberts on Monday issued a temporary administrative stay of lower court orders that Slaughter should be allowed to remain on the job pending litigation over the lawfulness of her termination. The justices are considering whether to take up the case.

Slaughter contends her firing is illegal.

Congress created the five-member FTC in 1914 with members appointed to seven-year terms and removable only for cause. Trump fired Slaughter purely at his discretion, arguing the law is an unconstitutional infringement on executive authority.

A landmark high court decision from 1935 — Humphry's Executor — upheld the constitutionality of the FTC removal provision; however, many of the current justices have indicated the ruling should be overturned.

--ABC News' Devin Dwyer