Also 1. I don’t think people generally say that.
2. CDC made a huge mess of the pandemic (eg not stocking enough PPE). USPS is in big financial trouble.
3. This is huge topic but I’m inclined to say US messes up as often as it succeeds. Afghanistan will have 22 million people starving this year because of US sanctions. They promote democracy, but not human rights.
But overall I think you’re right to say the US government is one of the “more” efficient ones.