TUSCALOOSA, ALA. -- Mike Huckabee has changed his mind and will sign an Alabama senator’s immigration pledge for presidential candidates - an effort to defeat the McCain-Kennedy proposal in the U.S. Senate. In Birmingham last week, Huckabee said he was almost ready to sign the pledge put forth by Sen. Jeff Sessions, R-Ala., but was on the fence regarding one of its aspects. "Which one?" a reporter asked. Huckabee said it had to do with the 13th point of the 15-point pledge, one to “eliminate the visa lottery program and change current preference categories that guarantee automatic entry for aging...