"g-men can log into Twitter, Facebook, online banking accounts, and so on, and rummage around"
With that kind of criteria, my guess is that around 75% of US citizens under the age of 30 would likely not be able to fly either if this search was applied to them.
In any case, if I had any inclination of wanting to spend money in the US (which I don't under the current Administration), given that I have no social media accounts and my webbanking account needs an OTP key which I will certainly leave at home, I guess those eagle-eyed intellectual wizards at the border control desks will just have to repeal me if I tried.
Somehow, I am almost wishing to see this go through just for the fun of watching (from afar) the meltdown that will undoubtedly ensure. Looks like The Donald is going to wreak more havoc on the US itself than anywhere else.
Can we have a popcorn icon ?