"But conservatives this year should have as their primary goal making sure Republicans wield all the gavels in Congress in 2013.
If Republicans do, their committee majorities will serve as fine-mesh filters, removing President Obama’s initiatives from the stream of legislation. Then Republicans can concentrate on what should be the essential conservative project of restoring something like constitutional equipoise between the legislative and executive branches.Such a restoration would mean that a reelected Obama, a lame duck at noon Jan. 20, would have a substantially reduced capacity to do harm. Granted, he could veto any major conservative legislation. But such legislation will not even get to his desk because Republicans will not have 60 senators. In an undoubtedly bipartisan achievement, both parties have participated in institutionalizing an extra-constitutional Senate supermajority requirement for all but innocuous or uncontroversial legislation. This may be a dubious achievement, but it certainly enlarges the power of a congressional party to play defense against a president."
"Beginning next January, 51 or more Republican senators, served by the canny Mitch McConnell’s legislative talents, could put sand in the gears of an overbearing and overreaching executive branch. This could restore something resembling the rule of law, as distinct from government by fiats issuing from unaccountable administrative agencies exercising excessive discretion."
Republicans can stop Obama, one way or another - The Washington Post