The good news is every sheriff’s department and the U.S. Coast Guard has the authority to board any boat to check for alcohol abuse or to just count life jackets. While they are at it, they can check for WMD and other weapons of lessor destruction.
As well as marine police and state police...........the ability to check for this stuff is already in place, there is absolutely no need for more regulations/laws/intrusions in our lives.
And you think that it is good that LEOs can board any boat for any reason, under the guise of "counting life preservers"? That is just as bad as police roadblocks to make sure people are properly wearing their seatbelts.
Being a Great Lakes boater, I must tell you how ridiculous the US/Canadian border is in relation to your suggestion. We frequently, and know many other boaters, who make the trip North to Canada via Lake Erie into the Detroit river. Upon arrival at any marina in Canada, one simply calls in to customs, gives registration numbers, boat name, etc, how many persons O/B and how long will the boat be in Canadian waters. It gets more laughable when a boat returns to the US, it simply returns.......no call-ins, nothing. Incidentally, we have never been check-boarded by the Coast Guard nor do we know of anyone who ever has. We simply re-enter the US mid way through Lake Erie. The Muslim population in Windsor, Canada, across the river from Detroit is about 40% and be assured they are not friendly.