Just came back from Italy last night. No visa required there. On arrival CBP officer asked where Ive been, but I was sent to secondary inspection. Secondary asked my nicely, why I got this RTD since I’m a resident already. Then asked me if I have tobacco or food and said Have a good day. 5 minutes in and out. Previously I flew with RTD 2 time and also was sent do secondary inspection. No questions at all just stamp and “welcome home”. Go travel the world, but I recommend always having an email confirmation that you don’t need a visa to particular country. And if you need visa go get a visa. Enjoy