The bill would require the U.S. Immigration and Customs Enforcement to take an undocumented migrant into custody if charged with theft or other crimes.

The Senate is poised to take up the Laken Riley Act, an immigration bill that's already passed the House. Here's what's in it.

The bill, which would require federal authorities to detain undocumented immigrants arrested for theft-related crimes, was the first to be voted on by the newly installed Republican-controlled Senate.