Many European countries have always done the same (collected lists of hotel guests , kept passports at reception etc) but whether anyone ever looked at them I doubt!
Of course, any real terrorist or criminal would not use traceable IDs.
An acquaintance who always holidays in Las Vegas, two or three times a year, came back so frustrated with over-zealous security this Xmas that they've vowed never to go back to US!
Hope Bill Sables gets away with his banjo and Yorkshire Tea!

RtS