By Rand Paul
Obama acts as though we no longer have a Constitution

Mitt Romney was all business, Rick Santorum was all smiles and Newt Gingrich pleaded for Iowans to punish negative ads as they fanned out across Iowa on Sunday searching for late momentum ahead of Tuesday's caucuses.

Working to solidify his frontrunner status, former Massachusetts Gov. Mitt Romney spent his morning campaigning in New Hampshire then swung back through northwestern Iowa, a winning area for him in the 2008 race.