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.