However, too many Americans seem resentful of the fact that their predecessors supposedly fled an intolerable government to found a new country on the other side of the pond.
Resentful? Huh? Proud, perhaps. Boastful, perhaps. Resentful? Now you've lost me.
Btw, my predecessors didn't "supposedly" flee an intolerable government. You can be quite sure that they did, in fact flee, and that the Lenin's government was quite intolerable (and destined to get even more so). At the time, they wouldn't have tolerated two of my grandparents living -- their families were put against a wall and shot.
OFBSLF