Changing duties, taxes, and rules is fine. It's how a society adjusts. Changing them instantly is literally the most anti-consumer, anti-business concept ever.
No 30 days? 90 days? Nope, block it all now! That's sheer stupid on a caliber almost unheard of. It sends a signal "Don't do business with the US, the rules change on a whim". Don't do business IN the US, the same!
Set up a company anywhere else, any other nation, else you'll wake up tomorrow and your entire business model is invalidated, without even a day to adjust.
This is how children behave. How over emotional, non-rational people behave.
Unfortunate.
I personally support this, but not immediately. Nutty.