At least that's something, right? It could be worse. They could still be running operations where they drug unwitting US citizens with LSD for "research". Or extrajudicial killings, torture and/or "renditions".
How do you know they aren't? We know that at least three US citizens, including Anwar al-Awlaki, were killed by a drone strike under the direct authority of President Obama on September 30, 2011, violating their rights under the Fifth Amendment (and maybe the Sixth). al-Awlaki's 16-year-old son Abdulrahman was killed by another drone strike on October 14, in, officially, an "accident". Have they stopped?
Would you rather be Gaum under US rule or India under British rule? Haiti under French rule?
How about Iran under the Shah Reza Pahlavi? The US did that: helped the UK to overthrow the parliamentary government in 1953 and the supported the Shah for 25 years, until he was overthrown. And then supported Saddam Hussein while he was using poison gas against Iran, until suddenly someone decided he was Totally Evil and Had to Go and started a war that resulted in some unknown number of deaths, at least 500,000, plus over 2 million refugees. The Soviet Union invaded Afghanistan -- and so did the US, so I guess we're even on that score. Before that, the US invaded Viet Nam, resulting in how many deaths? One million? Four million? Estimates differ. We can also give Nixon and Kissinger credit for the Cambodian genocide, since Pol Pot wouldn't have been able to take power without their unauthorized secret bombing of the country. For a few more oppressive regimes, there were Rios Montt in Guatemala, Pinochet in Chile, the military dictatorship in Brazil, the "dirty war" in Argentina, the mass murder of "at least 500,000 to 1 million" (Wikipedia) suspected communists in Indonesia in 1965-1966, all supported or instigated by the US. I'm sure there were more.
The US has been trying to overthrow the government of Venezuela since 2003 for some reason. I seem to recall there was a recent candidate for the US presidency who claimed the election was "stolen"; it takes a lot of arrogance for the US to try to lecture another country on their electoral processes and try to tell them who their president should be.
I haven't added up all the scores, but it's my impression that the US overthrew more governments in the 20th century than anybody else. There's definitely a pronounced history of supporting right-wing regimes.