I think the inequality in the US happened because of the deregulation and privatization, not globalization. Globalization made America richer, but deregulation and privatisation of every thing caused inequality. But for politicians who work for billionaires or billionaires themselves, it is easier and certainly financially beneficial to blame it on globalization rather than letting the government regulating their businesses and increase their taxes.

But reversing globalization and restricting foreigners from owning the US assets will indeed cause the prices of those assets to fall since there is less buyers now. Class struggle is indeed back in America.