Democrats may stand in Obama's way on gun measures - Article Photos 5/5

FILE - In this Jan. 22, 2013, file photo, Treasury Secretary-nominee, current White House Chief of Staff, Jack Lew, right, talks with Senate Finance Committee Chairman Sen. Max Baucus, D-Mont., on Capitol Hill in Washington. As the Senate prepares to begin debating new gun control measures, some of President Barack Obama's fellow Democrats are poised to frustrate his efforts to enact the most sweeping limits on weapons in decades. All eyes are on a core group of these Democrats, including Sens. Baucus, Mark Begich of Alaska and Mark Pryor of Arkansas, who are up for re-election in 2014.(AP Photo/Susan Walsh, File)