Point Roberts has had a bad time with all the Covid actions and reactions. It is a point of land you basically can only access through British Columbia, very close to Blaine. So Canadians have had some of their boats removed and Americans have had some of their boats removed. Google map Point Roberts Washington.
There is active lobbying to allow Americans to come through and access their boats at PR. If the lobbying is successful, it will be a useful well protected area for your boat. And I can pretty much guarantee you they will have room. Slip sizes go up to 64 feet. I would phone them and see what the scoop is for access, etc.
The area of PR is about the size of a university campus and it is guarded by American border guards so your boat will be more secure than many places in North America. It has a history of booze smuggling during the rum running days of prohibition. Then for British Columbians it was a party place on Sundays as in BC you could not buy booze anywhere (legally) to drink on Sunday. So PR was swamped with Canadians partying on the one day of the week. Currently the attraction for some Canadians is buying gas. Gas in cheaper in the States so many who live close to PR will drive there to get their gas. So this little area has a long history of being busy with both Americans and Canadians, but in reality more Canadians.