This was not the US
https://abcnews.go.com/International/wireStory/latest-us-denies-part-venezuela-attack-57042868
Let's face it. The people of Venezuela hate their president. There is no way around that. So to assume the US is involved in such a half-assed attempt to assassinate someone is just insulting. If there is one thing America does well, it is killing people. This was just simply an explosive slapped on a drone and flown in and detonated. Just sloppy. I would say it is the work of some very pissed of people living under this socialist shithead leadership