I can't see this ever happening, it's just do ridiculous. Even if it did pass, how many of the border patrol agents do you think are actually going to take the time to enforce it. I would venture to say that a lot of these agents wouldn't even know how to use half of these devices anyway.
What would probably happen, if such a thing were enacted, is that border guards would search your stuff if they did not like you for some reason. It would be impossible for them to actually search everyone for all this stuff, so there would be unequal treatment of people at border crossings.
I suggest that you always be polite to border guards, and hope that they have not been having a bad day, or are prejudiced against people like you for some reason (or no reason worthy of the name).
A lot of people probably are not concerned about this, as they think it won't happen, or if it does, that it will not affect them. That kind of attitude, of course, makes it more likely that it will happen.