The way the drive for gun control got stymied shows that the operative dynamic in the Senate has become more insidious than ever. It turns out that, in this case, the wishes of 9 in 10 Americans can be repelled by a group of lawmakers representing fewer than 3 out of every 8. A whole series of surveys have found support in the 90 percent range for requiring background checks before almost all commercial firearms sales. That’s about as close as it gets to unanimity in the polling world. And that’s the heart of the proposal that was blocked Wednesday, effectively ending the debate over how best to reduce gun violence — at least until after the next massacre in a schoolhouse, movie theater or supermarket parking lot. On the surface, the reason was that 45 senators opposed the idea and, under the new normal for accomplishment in the chamber, any proposal of consequence can be stopped by any bloc of 41 or more. That’s because, three years ago, the dilatory dysfunction got so bad that the leaders of both parties struck a handshake deal. To keep filibusters from swallowing the Senate calendar whole, they would grant the minority an extra measure of leverage on any controversial votes for passing bills or adding amendments: They could insist that the other side come up with 60 affirmative votes, or a three-fifths supermajority. (more…)