One example is our carrier fleet ~ we can pull up next to and lay down fire anywhere we wish ~ and collect tribute if necessary.
Did you ever stop and think about how much tribute we could take ~ it's enormous. That national debt ain't no thang compared to what we can simply ask for.
Then there are the public lands ~ 30% of USA landmass ~ and the 200 mile economic zones offshore, and what a shore ~ ! WOW ! ~ we own thousands of Pacific Islands ~ and every one of them has that economic zone. Whatever is out there is ours.
Remember, when your assets more than equal your debts you are not broke ~ you might be "Land Poor" but you're not broke.
Gimme an example of who we could collect 'tribute' from... someone who has the money - maybe Russia or China? They might fight back...
Remember - we're the people who give money to Egypt... and a few hundred other equally charming places... A better solution than collecting tribute might be to stop giving away our treasure in the first place...