Sen. Joe Biden, D-Del., bucked a trend by announcing his intention to run for president over the weekend - distinguishing himself from other visiting hopefuls who have dodged the question on their respective visits to Iowa. Biden swept through eastern Iowa on Sept. 23, stumping and raising money for Democratic congressional hopeful Dave Loebsack during a two-day tour of the state. "I'm coming back next year to do something else," Biden said near the end of his speech in Cedar Rapids, referring to next fall's run-up to Iowa's January 2008 caucuses, which signal the official start of the presidential election...