Some people claim that the 14th Amendment to the U.S. Constitution establishes the principle of birthright citizenship.

This encourages pregnant women to illegally cross the border in order to give birth and remain in the U.S., an act that has been called “birth tourism” or having an “anchor baby.”

Donald Trump signed an executive order aimed at ending automatic citizenship rights for nearly anyone born on U.S. territory, which seeks to deny citizenship to the children of illegal immigrants.