And always think that the benefits of this decision (if it really comes forward) will be gained by the president after the next president.
On the other hand, there's Venezuela. But i don't think the CIA needs a whole army, for that. And the money will come from drug deals, of course.

Seriously, it is clear that the US cannot just go on spending such amounts for decades, but since they are used to play globally, the upkeep of the infrastructure will be hard to maintain.
A smaller, but excellent military with superior equipment will be better, but still costly..