ROGER SIMON: Leaderless America On Labor Day.

Conservatives and libertarians can rejoice, if they wish, at the spectacle of Barack Obama proving once again — and perhaps more definitively than ever — that he is the worst president of the modern era, through his utter mishandling of the Syrian situation.

But they ought to wipe the smirks off their faces, because here’s the bitter truth: The GOP bench — the right-wing or even center right-wing presidents in waiting — isn’t a helluva lot better. Not enough, anyway.

At no time in our history, at least in my increasingly long lifetime, has there been such a dearth of key political leadership in our country on both sides of the ideological divide — and at a moment when the world seems about to explode.

And ultimately, of course, the voters — and the media, which has gotten steadily dumber — are at fault.