Democrats at the podium of the party's national convention are fully—and finally—embracing President Obama's signature healthcare law, and liberal lawmakers are applauding the move. On Tuesday's opening night, speaker after speaker championed the 2010 Affordable Care Act, a trumpeting that was striking for a law that top Democrats had largely sidelined because of its lingering unpopularity with the public. As Obama seeks reelection, his allies have returned to heralding the law as a historic and courageous political achievement.