A controversial new anti-illegal-immigration ad by GOP presidential hopeful Ron Paul has sent his libertarian supporters into high dudgeon, but it's getting rave reviews from border-security hawks, including some Homeland Security officials. In a surprise move, the strict constitutionalist has taken aim at the 14th Amendment as part of a proposal to control growing illegal immigration. U.S. Rep. Paul, R-Texas, proposes repealing the provision that gives automatic citizenship to children born in the U.S., even if their parents enter the country illegally.