Donald Trump took the fight over his attempt to restrict automatic U.S. birthright citizenship to the Supreme Court on Thursday as the Republican president's administration asked the justices to narrow a judicial block imposed on this key element of his hardline approach toward immigration.

President Donald Trump is asking the Supreme Court to prop up a January executive order ending birthright citizenship in the United States. The order, which would stop the practice of granting citizenship to children of undocumented immigrants and other noncitizens born in the U.

Judges in Maryland, Massachusetts and Washington have issued nationwide orders blocking President Donald Trump’s executive order to ban birthright citizenship.