I bet you if PJDT simply told the “U.S. Citizenship and Immigration Services” to not do a thing. No announcements, let the visas expire, send them home. New and pending visas are suspended and void. Everyone needs to re apply.
That will keep the U.S.C.I.S. busy during the roarback.
Barely anyone that matters would even care.
The truth of the matter is that Trump can only afford to have so much economic disruption at any given time.
Hiring American replacements, telling the Indians there to train their replacements ;) and then sending them home WOULD create degrees of disruption while it was unfolding.
I think Trump wants to get past this election before risking that.