CBS News: With barely a month until the Iowa caucuses, Mitt Romney is beginning to get serious about a state that he once appeared to be shunning. While the Republican presidential candidate himself was fundraising in Texas on Friday, where he hobnobbed with "good friend," former President George H. W. Bush, one of his most high-profile and outspoken endorsers, New Jersey Gov. Chris Christie, held a tele-townhall with Iowans. Christie is planning a campaign trip to Des Moines next Wednesday with his wife, Mary Pat Christie.