I’m not sure whether we’ll see an increase in it under the Trump Administration.

Nationalism and Social Centrism are both more defensible than Bush and Obama-era American Conservatism, which is part of why we’re seeing them rise, although they’re not calling it Social Centrism yet.  A less jingoistic Nationalism is also a better counter to the Globalism popular among the Left, more capable of exploiting the holes in modern Multiculturalism that have been made vulnerable by the increased stress on the system, but it seemed that for a long time the Jingoism was all we got.