If we accept that we are Britain in the 1800s, and that we enjoy certain benefits to being the reserve currency of the world, then the question becomes, what strategically can the US do to remain the dominant player in the world?
Can transfer of technology know-how be stopped, given the changes in the world since 1800? If anything information is more available than ever, so it seems like a losing battle.
What about a show of force, like the Opium War forced Beijing to open its markets? Tricky as well, on one hand.. nuclear war. On the other hand, that power disparity continues to narrow over time, if there were a time to risk it all it would be now.
I'm sure there are other strategies out there as well, but those are two that come to mind.