We don't have an
imminent debt crisis, we do however have an
inevitable one if we don't do something about it soon. As we can currently borrow for nothing (in real terms) or almost, Obama, Boehner and Ryan are quite correct that there's no
imminent debt crisis, the first stage of that would be
not being able to borrow at these historically low rates, and we wouldn't have the luxury of contemplating balancing the budget in ten years.
Ryan's budget includes a section on the possibility and effects of a debt crisis on pages 13-16. Just look at some of the pictures and then perhaps
this will make more sense. Look at the debt outlook of the US compared to some other countries, ours (from S&P, Moody and Fitch) are all
negative. Now take a look at Uruguay, two of theirs are
positive. That doesn't mean that Uruguay has a better economy than the United States, nor a better debt history (that's reflected more in the rating) but that their
government budget outlook is better than ours, meaning their future debt outlook is brighter.
I dunno what the big deal is about the twitter, but given what he said I don't think whoever posted that twit was talking about the same thing. It looks to me that just meant whoever posted it thought the 16.4 T in total debt amounted to 'an immediate crisis in terms of debt.' Well, if we didn't have that much debt we wouldn't have any debt problems, and the fact that figure is so high certainly impacts our future debt prospects, and the fact we need to finance so
much of it in volume is yet another factor, but the amount of debt we have isn't the
only contributor to what most consider the definition of a 'debt crisis.' Lemme illustrate it this way: we could have 16T in total debt but if the budget was in balance, (or we were even running a surplus) the economy growing at a robust 4% and our future entitlement liability disaster was resolved then the amount of debt we had would not matter all that much and few would be talking about it, especially as we've been able to finance it for little cost.
However since none of the above apply we do have a problem, one we need to resolve and the sooner we do it the less painful it will be all around, but the fact that doing so will be painful too makes it unpalatable. When you've been running deficits just balancing the budget means less money will be available, (fiscally) running surpluses is actually a drag on the economy, but both can be overcome by
other factors, such as real growth like that of the latter nineties where capitalizing on the productivity boom mainly due to computers becoming available in just about every workplace drowned completely the undertow of paying down the deficit and ultimately the debt.