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A comment on CBP is monitoring US drivers and detaining those with suspicious travel patterns. Parent comment

Re:CBP is monitoring US drivers and detaining those with sus... by 1121redblackgo on Thursday November 20, 2025 @03:17PM (#45997125)
What is the rationale for 100 miles? Curious if anyone knows, or if its an arbitrary number a lawmaker decided?
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Re:CBP is monitoring US drivers and detaining those with sus... by nabla9 on Thursday November 20, 2025 @03:27PM (#45997259)
The 1946 statute gave CBP the authority to stop and search all vehicles within a “reasonable distance”. CBP defined the reasonable to be 100 miles and it stuck. It's just federal regulation interpreting the law and courts have blessed it.
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Re:CBP is monitoring US drivers and detaining those with sus... by dboreham on Thursday November 20, 2025 @03:34PM (#45997347)
Supreme Court rulings it seems. This is the law: https://www.law.cornell.edu/uscode/text/8/1357#

But it only says "any reasonable distance". SCOTUS appears to have come up with the 100 mile limit in various cases over time.

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