Earlier quoted context omitted.
I can see members of congress agreeing to privacy right at the border for citizens --only a very few would support the same for non-citizens, even Dems. There is no political upside to that position and it serves a very small percentage of Americans, indirectly, so, that's not going to fly.
You're mostly right. At some point these experiences may affect tourism, business, and desirable immigration. But it's probably too distant of an effect to have that much political capital.
(Our family was seriously considering a touring camper holiday to the US in a year or two. Now: no way in hell.)