The 38-page lawsuit contends Mr. Trump's executive order "will have a devastating and chaotic impact," arguing birthright citizenship is guaranteed, not only in the 14th amendment but also in a federal statute that details who is entitled to birthright citizenship.

The Trump administration is "twisting itself in knots" in trying to limit birthright citizenship and focus on deportations, argues New Jersey Attorney General Matthew Platkin.

Only hours after being sworn into office, President Donald Trump issued an executive order that would end birthright citizenship. Can he do that?