Okay, blackmail is absolutely interference. But you need to actually prove that blackmail is happening. There are plenty of other reasonable explanations for why so many of our allies elect pro-American politicians: namely that we're their super power buddy that carries the burden of dealing with other super powers. Even when we go off the reservation a bit (like Iraq), it's still much easier for places like France to stick with us than ditch us.

>their super power buddy that carries the burden of dealing with other super powers.

"Do what we say, if you don't we'll punish you or you'll be forced to do what they say."

None of what you're describing particularly sounds like "free choice by the people." It's just been normalized so you don't see it as unusual or call it interference. As you say, the US is a super power. They aren't tasked with the burden of dealing with other super powers, they exert their power to maintain and further their position.

Oh, and when you look at the sheer volume of regime changes the CIA has been involved with, the blackmail becomes obvious. You know they're spying, you know what they're capable of and willing to do.