The Supreme Court has cleared the way for the Trump administration to potentially revive an immigration policy once used to turn back migrants seeking asylum at the U.S.

The ruling was a big victory for the Republican administration, which views the expansion of so-called expedited removal as a key tool for carrying out its mass deportation policy.

A federal appeals court has permitted the Trump administration to resume swift deportations of undocumented migrants nationwide, overturning a lower court's block. This ruling…