USA has embraced globalism and benefitting from it.

American middle-class wealth has moved to upper-class rather than to outsiders.

"The recent stability in the share of adults living in middle-income households marks a shift from a decades-long downward trend. From 1971 to 2011, the share of adults in the middle class fell by 10 percentage points. But that shift was not all down the economic ladder. Indeed, the increase in the share of adults who are upper income was greater than the increase in the share who are lower income over that period, a sign of economic progress overall."

https://www.pewresearch.org/fact-tank/2018/09/06/the-america...