Nope, I see the problem as financial and economic. You can't embezzle a country of billions (trillions!) and expect that it still has enough money to function properly. A country is really just analogous to a very large Corporation.
In what way do you predict the United States will go “broke”?
The US is already "broke". It has no chance in Hell of ever repaying its debt. The world has lost its confidence in the US economy. The use of the US Dollar as a Reserve Currency is now down to about half of what it used to be, and declining steadily.
Going back to the Cold War 1.0, BOTH the US and the Soviets ran out of money at the end of the 1980s. The US was unfortunate(!) in having the Reserve Currency Credit Card which allowed them to keep spending as though nothing had changed. So now, 30 years later, and 30-odd trillion in debt, the US has no hope at all of recovering - it's just in too deep. The Zimbabwe scenario is close at hand.
On the other hand, because the Soviets/Russians didn't have the Reserve Currency Credit Card, they had to to pull in their belts and try to pay off their own massive (but still manageable at that time) debt. That took them about 15 years, but now they are 'back in the black' and now have quite commendable foreign reserves. Their financial prospects are good.
Do I imagine that Texas will become Belarus? Good question. It's certainly possible that, as a previously independent Republic, when the SHTF that the Texans will refuse to subsidise the other very destitute states with their oil money, so that they can sort out their own Texas financial problems. I'd guess that maybe it's a 50-50 chance that Texas will 'de-merge' to prevent their going down with the rest of the US.