The United States does not build cruise ships nor does it build ships for international trade because the foreign yards are significantly more cost effective. US shipyards are not competitive internationally and they only build for the USN and domestic cabotage.
I understand that. My point was that I don’t see how the Jones Act could have such strong influence on the berthing and routing decisions of a foreign cruise line that can easily meet the legal requirements of the Jones Act on a trip from Seattle to Alaska simply by making a port call in Vancouver on the way.