When he wrote Common Sense none of the founders were citizens.
He actually went to France - Ben Franklin hooked him up because of the backlash against him in the US. People are fickle.
"In the beginning of a change the patriot is a scarce man, and brave, and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot."--Mark Twain