Over at Greg's place I argue that the liberal achievements of the 111th Congress actually reflect a liberalism that has given a great deal of thought to conservative criticisms.
The Obama administration's agenda, by and large, reflected a liberalism chastened by past failures and willing to endorse more market-based solutions to problems. Rather than simply dismissing conservative criticism, liberals internalized it -- and modified, narrowed and adjusted their goals accordingly. Where conservatives said liberals were too ambitious, liberals sought more focused solutions. Where conservatives said the market would work better than government, liberals tried to find a market-based path to the same goal. When conservatives pointed out that judicial decrees, even in matters of civil rights, are no substitute for the legitimacy conferred by legislative action, liberals took it to heart.
Of course, as liberals moved right or recognized conservative criticism as legitimate, conservatives mostly leveled the same tired epithets at everything liberals tried to do. A more limited DREAM Act with harsher behavioral restrictions became "amnesty," Reagan's arms treaty would lead to nuclear annihilation, and a national version of Romneycare became the twilight of freedom in America. In the hands of liberals, conservative policy ideas become dangerous, elaborate plans for the unmaking of the country.
The Affordable Care Act, DREAM, START II, these things all have conservative origins. So it really is remarkable that they've become so associated with liberals and objects of such enmity on the right.