David Bier, Cato Institute Director of Immigration Studies, states, “But if you don't have a passport according to this order, you don't have proof of citizenship. Your birth certificate isn't enough.

A federal judge has temporarily blocked President Donald Trump’s executive order ending the constitutional guarantee of birthright citizenship regardless of the parents’ immigration status.

A federal judge Thursday blocked President Donald Trump’s executive order outlawing birthright citizenship—the policy automatically giving citizenship to anyone born in the U.S.—and declared it “blatantly unconstitutional,