Sheridan,
I found this topic very interesting, and have learned a lot from wanting to "dig" a little further...it's been eye-opening; to say the least!
I just found this good page from ACLU...
The Fourth Amendment of the U.S. Constitution protects people from random and arbitrary stops and searches. Although the federal government claims the power to conduct certain kinds of warrantless stops within 100 miles of the U.S. border, important Fourth Amendment protections still apply.
www.aclu.org
It mentions the 100-mile concept you mentioned and...wow...as the map will show, that area covers one heckuva lot of the big cities; ie. LA, San Diego, Houson, and ALL of Florida. LOL..or not so LOL.
I like the chart on that page made to explain the different points that may cause a search. (see attached)
Even though we have nothing to hide, like Neal, except some frozen pineapple pizza (which is grossly illegal in my law of pizza) in case we run into him, I still would feel uncomfortable having our coach searched. For example, I have CBD oils for my back; what "IF" those were considered illegal?
Tonight, I listened to a USCCA presentation about traveling with firearms; to "KNOW WHERE YOU GO". In that show, they mentioned that in some states HOLLOW-POINTS are illegal; so, again, what "IF"?
With all the stupid youtubers running around provoking a "1st Amendment Audit" against cops, it's caused a few discussions from my buddies on what our "rights" really are, what you can do, and what you don't have to. And, with all the 2A battles going on, that right is also been at the forefront of my mind lately.
So now, thanks to
@sheridany, I've gotta squish to make some room in my noggin to put this 4A topic in there!
Never too old to learn something new every day!