With WA having 591, there is still paper trail like 941. I guess it would take a bit longer on an investigation if someone really wanted to find out but it could still be done.
I don't disagree about boycotting OR over it, but unless you are close to the river and can easily get across state lines, the time and gas could be counter productive.
Just my $0.02
WA is pretty close to me, especially when I'm at work, so it works for me. I realize I'm still on the record, and since it's a new sale I'm talking about, it's going to be on the books. But not sending that $10 to Oregon for the BGC is a nice option. Obviously not a good option for those that are not close to the border