On Thursday, Trump administration officials admitted that Columbia student Mahmoud Khalil was arrested without a warrant. Khalil, a green card holder, has been detained since March, when Secretary of State Marco Rubio cancelled his visa over nebulous allegations of "pro-terrorist" speech.

In filings in the case of Mahmoud Khalil submitted to immigration court yesterday and federal court today, the Trump administration admitted he was taken without any kind of warrant and made new, false claims that Mr.