The order will deploy 1,500 troops to build physical barriers, but they will not be used for law enforcement, a military official says.

President Donald Trump's administration has directed U.S. prosecutors to criminally probe local officials who resist immigration enforcement efforts, intensifying a sweeping crackdown that Trump launched the day he took office.

More is coming, but many directives will take time to be implemented or will face political, legal or practical obstacles.

"My office is a law enforcement entity. We are going to follow the Constitution and uphold the law," Krasner said as Trump officials threatened consequences for uncooperative local officials.

Trump has issued directives to expedite the removal of millions of undocumented immigrants from the U.S., which has immigrant groups bracing for raids.

The Justice Department is directing its federal prosecutors to investigate for potential criminal charges against any state or local officials who stand in the way of beefed-up enforcement of immigration laws under the Trump administration.

In line with Trump’s edict, CNN’s Natasha Bertrand, Priscilla Alvarez, Haley Britzky and Oren Liebermann report. They’re expected to beef up existing operations to support Customs and Border Protection,

President Donald Trump on Monday kicked off his sweeping immigration crackdown, tasking the U.S. military with aiding border security, issuing a broad ban on asylum and taking steps to restrict citizenship for children born on U.

President Trump's administration is following through on promises made during the 2024 presidential election, but some of his actions may take time to implement and could be debated in the courts, according to CBS News' Ed O'Keefe.