Republican presidential candidate Mitt Romney is preparing for a higher profile in Iowa, where he possibly could land a knockout punch if two top rivals don't quickly fix their campaign problems and back-of-the-pack contenders such as Newt Gingrich [and Herman Cain who is currently leading in the pols] don't move quickly to energize voters. Romney, the former Massachusetts governor, recently recorded a TV campaign ad at a sheet-metal plant in Dubuque, in eastern Iowa. It's not shocking that he would prepare such ads. But every Romney step in Iowa intrigues GOP activists. After a crushingly disappointing loss there in 2008,...