Republican presidential hopeful Mitt Romney boards his campaign plane Wednesday in Bedford, Mass., heading for South Carolina, site of the next primary contest on Jan. 21. His strong stance against illegal immigration dovetails with South Carolina's tough new law. (Associated Press)

Republican presidential hopeful Mitt Romney boards his campaign plane Wednesday in Bedford, Mass., heading for South Carolina, site of the next primary contest on Jan. 21. His strong stance against illegal immigration dovetails with South Carolina's tough new law. (Associated Press)