Donald Trump clearly doesn’t care about Ukraine. He may well not care about Taiwan. But as the self-appointed boss of the Western Hemisphere, he naturally cares quite a lot about Venezuela. As a result, he has parked military assets around Venezuela under the pretext of fighting drug smugglers; the real purpose of this is to threaten Maduro and hope he goes away.
He won’t comply. Then what? Regime change will require direct military action against Venezuela, probably including an invasion. I’m not sure “America First” goes quite that far, but we’ll see.