The Laken Riley Act is the first bill President Trump signed into law Wednesday after returning to office — an early victory for his immigration policy agenda.Why it matters: The new law will require the detention of undocumented immigrants accused of certain crimes such as theft.

The Laken Riley Act, named for the slain nursing school student who was attacked and killed by a Venezuelan citizen who had entered into the U.S. illegally, is the first legislative win of Trump's second term.

The law directs Immigration and Customs Enforcement to detain illegal immigrants arrested or charged with theft-related crimes, or those accused of assaulting a police officer.