Obama never had full Democratic control of the Senate. Lieberman caucused with the Senate Democrats. He had lost his Democratic primary and ran+won as an indep

Obama never had full Democratic control of the Senate. Lieberman caucused with the Senate Democrats. He had lost his Democratic primary and ran+won as an independent. In fact, he'd endorsed McCain in 2008 (after Obama campaigned for him in 2006). Lieberman had and used a line item veto over everything that was passed by the Democrats because the Republicans uniformly opposed anything that was proposed. It took a supermajority to pass the ACA and it only barely passed because of Republican opposition.