In Iran, in the 50's and replaced him with the Shah, who did the bidding of US "interests." How much grief has the world suffered from that awful decision, how many people would be alive if we had allowed democracy to take hold then, in that place? How different might our world be today? The US has interfered in elections all over the world in general, and in the ME, and in South and Central America all in particular, way too much. We've been the 800 pound gorilla on the planet a whole bunch of times. And we've had a bad habit of GOP candidates making secret deals with foreign powers to influence elections and getting away with it, too.
That doesn't make it okay for Putin, or China or anyone else to interfere in our elections, but let's be honest about it. It is and was wrong for them to do it, and it was and is wrong for us to do it. To deny that we have done wrong does us no credit and wins us nothing except the opportunity to repeat our mistakes.
That SEAL knows more about it than you give him credit for and if he killed OBL or was even just part of that mission, he's earned the right to say whatever the fuck he wants, IMO.