And, as you haven't noticed, some of us think the 4th Amendment was supposed to end that behavior, the same way that slavery was ended.
I have, indeed, noticed what you think, I have read what you wrote, I was merely pointing out that what you think is in error.
As has been said before, several times, the 4th amendment says nothing about vessels. The Constitution is refered to in law as a living entity, as it evolves via amendments AND case law.
Obviously, motor vehicles (the land based kind) were not around when the 4th amendment was written. Case laws which uphold our 4th amendment protection against "unreasonable" searches of such vehicles came about as the result of arrests based on evidence uncovered during searches of said vehicles which were eventually held to be "unreasonable" by individual State Supreme Courts, Federal District Appellate Courts and/or the U.S. Supreme Court. There are many, many other examples (flying, entering a Courthouse and other government buildings and/or properties) of the Supremes holding that searches, even of your person ARE reasonable, and therefor not "unconstitutional"
As to the post about "poisonous fruit", it really doesn't apply to the CG and
If you read the case cited earlier by Patrick, you'll see that the Court of Appeals threw out the conviction of a couple of drug smugglers with a 40 foot sailboat ful off pot, holding that the Customs boarding was "unreasonable". The U.S. Supreme Court overturned the Appellate Court, upholding the lower court conviction, and cited the Title 19 U.S.C. § 1581(a), and specifically refered to it as being descended from the 1790 Revenue Cutter Act, and spcifically mentioned:
the First Congress clearly authorized the suspicionless boarding of vessels by Government officers, reflecting its view that such boardings are not contrary to the Fourth Amendment, which was promulgated by the same Congress.
Yes, evidence obtained from warrantless police searches on land gets excluded, but not as often as you might think. Most agencies are training their cops better in that respect. But evidence from CG, Customs and Border Patrol doesn't get tossed.