You need WA.

Federal law prohibits individuals or businesses from contracting with an independent contractor knowing that the independent contractor is not authorized to work in the U.S. (USCIS)

Not legally authorized to work means for any work regardless of the form of work or payment. It is not recommended you violate those terms. It may take time but you will get caught and when you do, you’ll find remaining in or returning to the United States in the future will be difficult, if not impossible.

So even thought Uber doesn't ask you to fill out I-9 you are still liable. And i wouldn't take that risk.