In the wake of Senate Democrats’ inability to break a GOP filibuster of the defense appropriations bill, to which Democrats hoped to attach the pro-immigration Dream Act and a repeal of the military’s “don’t ask, don’t tell” policy, the Reason Foundation’s Shikha Dalmia writes in Forbes:

But if Harry Reid was the proximate cause of this bill’s demise, ObamaCare was the fundamental cause. The ugly, hardball tactics that Democrats deployed to shove this unpopular legislation down everyone’s throat have so poisoned the well on Capitol Hill that Democrats have no good will left to make strategic alliances on even reasonable legislation anymore. When a party has such huge majorities, even small gestures of reconciliation are enough to splinter the ranks of opponents and obtain cooperation. But Democrats played the game of our way or the highway with ObamaCare, ignoring warnings that this would render them completely impotent for the rest of President Obama’s term. Indeed, Republican Senator Lindsey Graham of South Carolina,who had been working with Senator Chuck Schumer of New York to craft comprehensive immigration reform, gave up in disgust in the wake of ObamaCare.

How ironic that a president who got elected on the promise of bipartisan comity has produced nothing but partisan rancor. And his signature legislation that was supposed to save America’s most vulnerable has begun by throwing them under the bus.

Dalmia assigns Republicans their (ample) share of the blame, too. Read the whole thing.