It throws into doubt one of the key pillars of the president’s plan to crack down on migration at the southern border.

A federal judge in Washington, D.C., has blocked the Trump administration policy that restricts migrants who cross the southern border from seeking asylum.

A federal judge blocked a Trump administration policy barring migrants who cross the US-Mexico border from seeking asylum, issuing a major blow to President Donald Trump, who has sought to seal off access to protections on the border.