US President Donald Trump on Thursday made another attempt to curb birthright citizenship, signing an order preventing children of mothers who travel to the United States to give birth from automatically becoming Americans.

Additional details weren't provided, but Trump said he thought his latest actions would be constitutional.

President Donald Trump says he is once again trying to limit birthright citizenship in the U.S. He says he's signing two executive actions on immigration.

Trump takes aim at ‘birth tourism’, setting up court battle

One of the orders bans "birth tourism."