New Romney Iowa ad: Smaller government, end of 'Obamacare'By Daniel Strauss - 12/26/11 11:20 AM ET Mitt Romney is airing a new 30-second ad in Iowa in which he promises to shrink government and get rid of the Obama administration's healthcare reform law. The ad, "Conservative Agenda", features Romney promising to streamline the federal government and highlighting the former Massachusetts governor's background as a businessman. Spliced together with clips of him talking, Romney is seen walking through factories and talking with voters in a diner setting. "I'm going to do something to government," Romney says in the ad. "I'm going...