My friend, you are engaging in magical thinking. FedGov doesn't need our "money" - they can print their own. All they need is for foolish people to continue serving in the military which acts as international muscle to enforce the dollar standard.
This house of cards would fall fast (and will eventually do so) when the dollar standard collapses. Ain't no amount of tax receipt deficits gonna effect the octopus. Even today, freshly rolled bennie bux are a significant portion of the budget.
Consider our economy today - no one actually "works" in a productive field. People are either marginally employed, on some kind of benefit, or work in the public sector, which is actually another form of welfare.
So, even today, the whole thing operates on phantom money that recipients quickly exchange for real assets. That is, unless they are forced to re-cycle dollars to purchase treasuries, which is what currently impose on the Saudis & Chinese.
When this cycle is eventually broken, all the chickens will be coming home to roost.