President Donald Trump hinted at signing an executive order limiting sanctuary cities, but such an order will likely face legal challenges along the way, an expert tells Fox News Digital.

The discussions come as President Trump has taken aim at WilmerHale, another big law firm. Other major firms are said to be trying to cut deals with the White House.

President Donald Trump is expected to sign an executive action formally asking officials to take steps to dismantle the Department of Education, his latest effort to reduce the size of the federal government and its workforce.

President Trump is holding an event Thursday afternoon at the White House centered on his plans to overhaul the Education Department. During the event, he is also expected to sign an executive

The order, which is likely to face swift challenges, includes requiring documentary proof of citizenship to register to vote.

WilmerHale and Jenner & Block say Trump's executive orders targeting Big Law are unconstitutional and harm their business.

President Donald Trump's executive order seeking broad changes to how elections are run in the U.S. is vast in scope and holds the potential to reorder the voting landscape across the country, even as it faces almost certain litigation.

The order is expected to face challenges in court by civil rights groups, which argue it will disenfranchise millions of voters.

Closing the department requires an act of Congress, but Trump could make it nearly impossible for remaining employees to carry out their work, much like at USAID.