What to do:

Your health care is likely to be lost if it is AHC. Get an appointment and demand as thorough a screening as possible. Prices elsewhere will probably rise so document your plan and its usage well. Pre-existing condition restrictions could return so be informed.

Tariffs will make certain items expensive, so stock up where possible.
Walmart, Target, and Costco may lose some price advantages. Some items like cheap electric cars will be unavailable if they come from China.

I don't know the effect on 90% of the economy, but beware of idle gossip; scams may become rampant and grift normalized without consumer protection.

The more you can document now the better off you may be in 4 years due to unforeseen circumstances.