as if you didn't know;
Why can the Coast Guard search our boats without a warrant or probable cause, when the police can’t search our homes, cars, offices, motorhomes etc.?
It’s always been this way. The same congress that passed the Bill of Rights passed the Revenue Service Act of 1790, which gave
revenue cutters the right to search any vessel anywhere in US waters, and any US-flagged vessel anywhere in the world.
Our fledgling nation was strapped for cash, and tariffs were the way to solvency. This was controversial even back in 1790, since many of our gripes against the British, as stated in our Declaration of Independence, had to do with tariffs (see Boston Tea Party). The crews of revenue cutters were allowed to board vessels to make sure they’d paid the tariffs on their cargoes.
Since 1790 the Coast Guard has been shaken up, mishmashed, and passed around like a red-headed stepchild, but the Revenue Service Act of 1790 has only gone through minor changes.
The modern Coast Guard is an amalgamation of five federal agencies: the Revenue Cutter Service, the Lighthouse Service, the Steamboat Inspection Service, the Bureau of Navigation, and the Lifesaving Service. The Coast Guard, as a named entity, wasn’t created until 1915 under Woodrow Wilson. For much of its history it was part of the Treasury Department. In times of war it sometimes falls under the Navy’s command and sometimes acts on its own, but Coast Guardsmen and their predecessors have fought in every war in our nation’s history.
Now the Coast Guard is part of the Department of Homeland Security, with added counter-terrorism and intelligence responsibilities.
http://www.sailfeed.com/2012/10/coast-guard-boardings-and-your-fourth-amendment-rights-part-2/