Definitely not H-1Bs (at least no different from non-Canadians). The TN could be impacted, however. My biggest fear is that the administration will limit TN renewals to filings with USCIS (and not allow renewals with CBP) like it did years ago to Canadian L-1 renewals. That change was a negative game-changer for Canadians in L-1 status. I am also concerned that the administration will simply make it tougher for Canadians to qualify for TN status.