BY JIM HIGHTOWER When Mitt Romney’s campaign was investigating potential choices to be his 2012 running mate, they gave each prospect a fish-themed code name, such as Lake Fish, Filet-O-Fish, etc. Their name for New Jersey Gov. Chris Christie, a tireless self-promoter known for his bloated ego, was Puffer Fish. The Romneyites determined that the prima donna governor was wholly unqualified to be America’s vice president, but the rejection didn’t deflate Christie’s puffed-up self-esteem one […]