Wait, why are you talking like only the US is calling him out for this? Multiple countries in Central and South America are condemning him, too.
If you're going to just quintuple down and say that those countries are also too irreparably damage to ever hold foreign policy opinions that aren't warped by US interests, or are straight up in the US' pocket...well, just don't bother. You've gone full conspiracy theorist on this, where all evidence is somehow invalid, and all absence of evidence is somehow proof.
Maduro is a ridiculously corrupt dictator who is trying to steal the election and is crushing people underfoot to do so, period. There is nothing the US has done or is doing that justifies any of his actions, or any kind of support for him.