Not all Americans supported the Iraq invasion.
In Saudi Arabia -- literally, the Arab lands belonging to the House of Saud -- the subjects don't have that power. They would have to have a revolution, first.
https://www.theguardian.com/world/2017/nov/06/how-saudi-elit...
Also, just because not everyone in the US supports their government, it doesn't mean that the government isn't using "blood money" to invest in their own future.
says that this varies state to state, with Maine and Vermont allowing people to vote even while in prison.