Sen. Tim Kaine (D-Va.), arguably more than any other senator, has invested considerable time and energy urging Congress to do its duty. As a U.S. military offensive gets underway in Syria, President Obama has received no real authorization from lawmakers, and the Virginia Democrat knows the system isn’t supposed to work this way.

“The president shouldn’t be doing this without Congress,” Kaine said yesterday, adding, “Congress shouldn’t be allowing it to happen without Congress.”

It’s that latter part that stands out. In recent years, congressional Republicans have been almost hysterical about presidential overreach, condemning the White House for alleged abuses that leave Congress out of the policymaking process. In nearly every instance, their evidence has fallen somewhere between baseless and ridiculous.

And yet, here’s a legitimate example of Obama ignoring Congress when he shouldn’t, and those same Republicans who pretended to care about this institutional dynamic are sitting on their hands, perfectly content to ignore their constitutional responsibilities in the name of political convenience. legitimate

The United States has begun a bombing campaign in Syria, but don’t bet on Congress returning to Washington to vote on a new war authorization anytime soon. Shortly after airstrikes against the Islamic State in Syria started, some lawmakers started pushing again for an authorization vote. But so far, leaders aren’t gearing up to bring their members back to town.

Asked to explain why Congress is satisfied doing nothing, House Speaker John Boehner’s (R-Ohio) office told Roll Call, “As the Speaker has said, he thinks it would be good for the country to have a new authorization for the use of military force covering our actions against ISIL, but traditionally such an authorization is requested and written by the commander-in-chief – and President Obama has not done that.”

Senate Minority Whip John Cornyn (R-Texas) added that Obama “should seek a new congressional authorization.”

Republicans may not fully appreciate just how extraordinary this approach to governing really is.

According to leading Republicans on Capitol Hill, Congress isn’t doing anything, and that’s the president’s fault. Why? Because the executive branch hasn’t written a bill for the legislative branch. Sure, lawmakers could write a bill on their own – it’s literally what they’re paid to do – but they’re instead waiting for the president to serve as a check on his own power.

In effect, GOP leaders are arguing, “Obama didn’t ask us to do work, so we’ve decided not to bother.” Take every Republican argument of late – about separation of powers, about co-equal branches of government, about the importance of institutional checks and balances – and throw them right out the window, confident in the knowledge that the GOP didn’t mean a word of it.

Congress could return to session immediately to tackle its constitutional obligations. Indeed, some lawmakers are returning to work next week to hold a hearing on the recent White House fence jumpers.

Apparently, that’s important – unlike, say, a new phase of a war in the Middle East.

I’m reminded once more of a recent quote from Rep. Jack Kingston (R-Ga.): “A lot of people would like to stay on the sideline and say, ‘Just bomb the place and tell us about it later.’ It’s an election year. A lot of Democrats don’t know how it would play in their party, and Republicans don’t want to change anything. We like the path we’re on now. We can denounce it if it goes bad, and praise it if it goes well and ask what took him so long.”