Stable and legit US trading platform wanted

I have been going nuts trying to find a good trading platform like ByBit or Phemex that is legal in the US and in Washington State. Kraken isn’t allowed in 10% of the US, same with Binance.US. Please, with all due respect, don’t mention copy trader companies. They don’t necessarily have to offer margin trading but it would be preferred.

Anyone? Any thoughts?