alt Hacker News> 84% of Americans think that "the American military should be used only as a last resort", that Congressional approval should be required for military action, and so on
In general, yes. What fraction of Trump voters do you think would agree that Trump should face any consequences for bypassing the Congress?
Or Obama's, or Bush's, or Clinton's? By the time somebody is in office and engaging in a pro-war platform, his supporters will look the other way. Even moreso in modern American politics where people are often no longer even voting for people they like, but for people they loathe less than the alternative. It's why electoral choice, which is largely absent in America, is so critical for the functioning of a healthy system.