Will they? Trump has said he's in favor of the H1-B program and has given no indications that he plans to lessen or stop it. Tariffs will likely be used as bargaining tools - you won't see tariffs directed at a country because a US corporation has outsourced labor there. There's a lot of noise about changes to immigration right now, but I'd be very unsurprised if little or nothing changed.

I have no issues with the Right learning that it must become further right to achieve its goals.

They worked so well against China in 2018 right?

Correct.