A federal judge on Friday could deal another blow to President Donald Trump's attempts to limit birthright citizenship, even though a U.S. Supreme Court decision last month made it more difficult for lower courts to block White House directives.

A federal judge in Maryland may soon become the second to block President Donald Trump’s order restricting birthright citizenship from taking effect nationwide.

In last month’s decision limiting one judicial tool, universal injunctions, the court seemed to invite lower courts to use class actions as an alternative.