The result of this will be the USA abandoning military bases in places like South Korea, increasing the chance of North Korea attacking South Korea, or China attacking Taiwan.

Youse knows we been protectin’ youse for 50 years from those commies in Ghyna. I think itsa time you paid up, so I’m gonna make ya a deal you cant refuse.

Just send Trump a bill for decades of non payment of use of the grounds on which the bases are located.
To use Trump’s own business-tactics against him: it was prime real estate ground worth billions that the bases blocked the development of … no exclusive reason those troops only had to be on land, could have kept a fleet on standby in the ocean or something.