I don't plan holidays in #US right now, but #DE press says, that I would be required to install an app for entering as a tourist?
I assume, that such an app would not run my #Mobian #smartphone, so that would require me to rent a #Fairphone or #Shiftphone for a week or two from @commownfr.
Still, requiring an app for entering a country does not sound like a #tourism booster to me.