Joe Biden inches closer to critical 2016 deadlines

Last month, when Vice President Joe Biden acknowledged that he was still unsure about whether to launch a 2016 presidential bid, he said there's "no way to put a timetable" on the decision-making process. But in fact, the vice president is drawing closer to very real deadlines that could effectively close his window of opportunity for mounting a third presidential run -- the filing deadlines for appearing on state caucus and primary ballots.