If America defaults on its debts come Aug. 2 — as the Obama folks warn, ab sent a deal by then — what will President Obama do on Aug. 3? Why, host a big birthday bash for himself, of course, to raise cash for his re-election.

That’s his plan right now, anyway. (He turns 50 on Aug. 4.) Tickets for a private birthday dinner with the prez will go for as much as $35,800 a couple.

We, too, want to wish the president a joyous birthday. But how can anyone take seriously his threats of default — and those of underlings like Treasury Secretary Timothy Geithner — when Obama himself doesn’t seem terribly concerned?

Indeed, the president and his fellow Democrats haven’t seemed particularly worried about the nation’s fiscal state for some time now. . .