Fake news
That is - not even slightly close to an accurate paraphrase of what your link says. The exemption is limited to the 4th amendment (meaning the whole of the rest of the constitution is not affected), and to "routine searches". And that's at the border. The '100 mile' limit only covers a significantly weaker dilution of the same right.
Note the wording of the 4th amendment, which prohibits only "unreasonable searches and seizures". Obviously it was always going to be up to the courts to determine what was and wasn't "reasonable", and the courts have taken the view that at a border crossing, some more intrusive than normal measures are "reasonable".
Which seems pretty logical to me, and probably not that far from what the founders intended.
Biting the hand that feeds IT
