Awesome
Only the western one, actually. Mostly around Yakima, but also Richland-Kennewick.
The two biggest concentrations of illegal Hispanics are around Pasco (Kennewick to a lesser extent, but not so much Richland; it's pretty much lily-white) and Yakima.
I assume that the district that links Walla Walla and Yakima would do so via Franklin County (Pasco), which would mean it has plenty of illegals too. In fact, I'd wager that the eastern would have just as many, if not more (Clark County doesn't have an exceptionally high Hispanic population).
I'd be able to tell you more if I could see a mapped version of muon2's districts, because I'm not sure I totally understand from the text descriptions.
I (and whoever I was replying to as well) was referring to the current map, ie the current Yakima-Richland-Pasco-Kennewick district as opposed to the current Spokane-Walla Walla district.