Republican lawmakers want to change the 14th Amendment of the Constitution so that babies born to foreigners in the United States aren't automatically granted citizenship.
Currently, foreigners can enter the country illegally or fly in on a tourist visa and give birth to an American citizen.
In 2008, 3.8 million illegal immigrants living in the U.S. had children who are legal citizens, an increase from 2003 when there were only 2.8 million.
But that's not all. Wealthy foreigners are coming to the U.S. to have a baby and then going back with a child that's forever a U.S. citizen.
Senator Lindsey Graham says changing the amendment is worth debating as part of overall immigration reform, but many legal experts believe a change isn't likely.