David Dayen at Firedoglake wrote this morning about how Sen. Richard Shelby’s attempt to block 70 Obama administration nominees over a couple of earmarks “does amount to what you would call a ‘teachable moment’ about the dysfunctional Senate.”

In his initial reaction overnight, Josh Marshall went a bit further, noting that Shelby’s hostage-taking attempt showed “gallons more audacity than Obama ever could have hoped for”:

… I wonder if this story might not end up amounting to much more than the sum of its parts because it brings together three or four of the issues roiling American politics today in a bundle of smack-you-in-the-face arrogance that’s too much to ignore.

For Republicans and the Tea Party set you’ve got pork-barrel spending and earmarks… for Democrats, there’s the outrage at archaic Senate obstructionism.

Perhaps more important, it crystallizes the essential pettiness and hubris of the Republican in such a vivid way that even Democrats should be able to sell the image of GOP selfishness to a generally inattentive public.

It’s happened before, back in 1995 when Newt Gingrich led the newly Republican-controlled Congress in forcing a shutdown of the federal government, trying to force President Clinton to capitulate on budget issues.  Thanks to an inopportune remark by Gingrich about a personal snub he had received from Clinton, the White House successfully embarrassed the GOP into ending the standoff.

That Shelby would try such a stunt barely a couple of weeks after the Republicans snagged their coveted 41st Senate seat shows that his party hasn’t outgrown Gingrich’s penchant for overreach.   But, as D-Day also wrote today, President Obama and the Democratic leadership can’t let themselves be even less willing to stand up for their own interests than the famed triangulator, Clinton.

Perhaps Obama should make a high-profile visit to various GOP senators’ home states, asking locals if they’re as fond of Shelby’s earmarks as Massachusetts voters were of Ben Nelson’s “Cornhusker kickback.”  Or maybe there’s a better attention-getting maneuver.

But hell, they need to do something.  Don’t let this teachable moment pass.

(Cross-posted at Firedoglake.)