Use US for the resident state and all WA income record as US. 

Sales tax?

https://accountants.intuit.com/support/en-us/help-article/form-w-2/entering-w-2-wages-withholdings-m...

It is entirely possible that with OR wages, there would be some OR taxes due. You could call support if you need help. This is a forum where you are asking other users. Support may want to look at your input and figure out where this sales tax issue is stemming from.