congressional stalemate that could mean a bigger government bite out of your paycheck. i m wolf blitzer. i m wolf blitzer. you re in the situation room . captions by vitac www.vitac.com the lines have been redrawn in the battle for the republican presidential nomination and after months of focusing his fight on president obama, mitt romney is now going after the newest front-runner, the former house speaker, newt gingrich. romney s latest assault is the classic campaign tactic of using the candidate s own words against him. joe johns is joining us now. take us inside romney s latest attack on gingrich. now we know that mitt romney apparently is not going to sit around and wait for newt gingrich to make a mistake as some have been suggesting. romney s on the offensive right now, but as far as we can tell, the former speaker hasn t exactly launched any kind of counterattack. down in the polls with weeks left until iowa caucuses, mitt romney makes his move. direct assau