Similarly to what the other reply said, if the claim is that these countries can only afford to provide healthcare for their citizens because the US subsidizes

Similarly to what the other reply said, if the claim is that these countries can only afford to provide healthcare for their citizens because the US subsidizes their defense, then the implication is that the US is paying for both their defense and healthcare at the expense of its own people. But the US military budget is enormous, and has largely failed to achieve any of the major foreign policy goals it's been applied towards. After 15 years of wars in the Middle East things are as bad as ever. Iraq, Afghanistan, Libya, and Syria are hardly on the road to stable democratic governments such much as bogged down (to one degree or another) in internal conflicts and civil wars. Russia and China are already kept in check by NATO, around 2/3rds of whose ~3.5 million active military personnel are not US based, aside from other non-conventional military deterrents (e.g. nukes and economic sanctions). Framing US foreign policy as "good vs bad" with the military as being the only thing keeping the evil foreign hordes at bay is borderline agitprop. That aside, my point was that the money is there for UBI, it's just a question of what other programs to take it from. Military spending and healthcare are two of the largest portions of the budget (along with social security, which would also be partially replaced by a UBI), so while people might debate the merits and dangers of cutting those programs, the money could certainly be found without significantly increasing taxes on the rich.