The US government ceded control over issuance of their currency to a private banking cartel 111 years ago. The US government issues debt, but they're at the mercy of the private banking cartel to create the currency to buy that debt. The banking cartel always has their back, but at a price: the corrupt bankers own the corrupt politicians. 

So in effect the government always gets what they need, but that's mostly because they're just empty suits acting a part in the banking cartel's dog-and-pony show.