Oregon is pretty tight/strict on aquatic invasives.
The equivalent would be to drive a trailered boat into the state that had quagga mussels attached to the boat. The other week a petstore told me they couldn't sell me ramshorns they had in a display tank.
Of course I'm responsible for trimmings/clippings but not everybody is, which makes some species a no-no. I just can't remember which ones!
EHEIM 2213 #317