The Trump administration asked the Supreme Court on Thursday to allow a ban on birthright citizenship in about half of the country for children born to undocumented immigrants and foreign visitors.

The Trump administration is pushing for the the U.S. Supreme Court to allow some restrictions on birthright citizenship even as legal battles continue over President Donald Trump’s orders to end what

U.S. immigration detention is filled to capacity at 47,600 detainees, a senior U.S. Immigration and Customs Enforcement official said on a call with reporters on Wednesday, adding that the Trump administration was seeking more bed space.

Again and again, the Trump White House has turned to a 73-year-old legal statute to defend its immigration crackdown.

President Donald Trump’s “largest-ever” mass deportation has led to the arrests of more than 32,000 illegal immigrants within the United States in his first 50 days in office, according to federal homeland security officials.

Khalil’s arrest could have a chilling effect on on- and off-campus protests involving people who aren’t citizens, said Columbia University immigration law professor Elora Mukherjee. Already, she said, it had provoked panic and fear among immigrant students on campus.

A U.S. judge on Wednesday extended his order blocking federal authorities from deporting a detained Columbia University student Mahmoud Khalil.

Secretary of State Marco Rubio has initiated removal efforts for Mahmoud Khalil, a pro-Palestinian activist, by citing Section 237(a)(4)(C)(i) of the Immigration and Nationality Act (INA), which denotes individuals whose presence poses serious adverse foreign policy consequences for the United States as deportable.