DC,
“Black Exclusion Laws in Oregon”, “Oregon Encyclopedia” found at:  http://www.oregonencyclopedia.org/articles/exclusion_laws/#.V02MsvkrLIU

“At least one person was expelled under the law. Jacob Vanderpool, reportedly a sailor from the West Indies, arrived in Oregon in 1850 and was arrested and expelled from the territory. Exclusion orders were issued against at least three other blacks during this period, but they received enough support from whites that they were allowed to stay.”

Think hard about the above. Only one case can be found of anyone being expelled but three cases where white’s stood against the law to fight for their black neighbors and won! As I said before, opinion is fine but opinion as fact is disingenuous.  Discovering "historical truth" and applying it to reality is hard work and we often find things that don't support our desired narrative.
"Beauty is truth, truth beauty,—that is all
     Ye know on earth, and all ye need to know."