America peaked in the 1950’s.
I can tell you the exact day we peaked: July 20, 1969—when we landed a man on the moon. After that, we listened to the Leftists, abandoned manned space exploration, and turned inward to fix “problems” here at home. Of course, the problems we sought to fix (like poverty) were largely unfixable, because they eminate from the human psyche. If we had gone into space (for real), a lot of current problems here on Earth would have been solved or rendered irrelevant. Liberals, of course, recoil at the thought of space travel. It is simply too good an escape route from their policies and it is too reminiscent of “frontier independence and adventure”.
IMHO, it speaks volumes that it is almost 40 years since the last moon shot and we are nowhere near returning to the moon, let alone going to Mars.