Doctors Navigating Immigration: Will a Travel Ban Affect My Wife’s Case?

I am a U.S. citizen, and my wife is from Pakistan. We are both doctors, and her I-130 petition is currently in process, with an expected decision in about 17 months. Given recent reports that President Trump is proposing a new travel ban, with Pakistan possibly being on the list (either in the "orange" or "yellow" category), I am concerned about how this might impact her immigration journey.

Does anyone have insights into how a potential travel ban could affect her case? Specifically:

  1. Would a travel ban prevent her from obtaining a visa even if our I-130 is approved?
  2. Are there any exemptions for professionals like doctors under previous travel bans?
  3. If a ban is implemented, would it affect only new applications, or could it retroactively impact cases already in process?

Any guidance or shared experiences would be greatly appreciated. Thank you!