Ensenada is not a foreign distant port. The cruise in question is totally illegal. You cannot cruise from Honolulu to Seattle without hitting a foreign DISTANT port.
As a travel agent, you're scaring me. There are two rules...one US port to a different US port..le...Honolulu to Seattle, you need to hit a foreign distant port..a return to the same US port you only need to hit a foreign port which is why the LA return Hawaii cruises hit Ensenada or why the Seattle return Alaska cruises hit Victoria.