The US doesn’t have a great track record of “not supporting distopian regimes”. They’ve either installed leaders with a dictatorial bent when the elected government wasn’t doing what they wanted, or just supported their puppet in the area even though they did horrific things. Generally they think “the end justifies the means”.

Apart from WW2, I can’t think of any major foreign operation that Americans were involved with that hasn’t blown up in their face sooner or later.