I think the Constitution is being misread here. It applies to debt during the civil war. That US debt would be honored and not the Confederate debt
If you really think defaulting national debt is impeachable, why is piling on trillion of debt NOT impeachable? Because one of these days, debt interest will be over 100% revenue and servicing debt is impossible. How could default not be an option?
defaulting is simply fixing a symptom of the problem, not the cause. The cause is piling up those trillions debt in the first place
You may have a point about the Constitution; I'm not a Constitutional lawyer like Obama (well he says he is one, yeah right). But they all kick the can down the road. Obama is kicking it past 2016. They won't default then because they'll just confiscate all personal wealth to fix it. We'll be like Cuba, all of us will be poor saps.