> I wouldn't consider the abolishment of child labor or enforcement of the 40 hr standard workweek as "completely useless"
Regulations haven't abolished any of that, they just pushed to China, where you still happily buy products from because they are so cheap.
> American experiment
First, the American experiment was to have a loosely coupled federation of states and to have spread power on the lower spheres of influence. That experiment has been abandoned for a while.
Second, the world should not not revolve around what American people and its government wants to do.