If it were 1947 this would not be happening. I do not picture a WWII vet, sitting at an interview acquiescing to Nazi-like interrogative requests from employers. They had too much self-respect. But today's modern day American male is a different breed. Meek, humble, cowardly and effeminate, sadly I see most people so desperate for a job they would comply.
However, I do predict employers, particularly the HR nazi's that come up with these violating ideas, will suffer a backlash. There will come a time where not only will it be impossible to meet these impossibly high standards, but most people will just give up and have no problems going on the government dole. It's kind of like the captain of the cheerleading team threatening time and time again she won't go out with you, and you realize soon, she'll never go out with you. She never had any intention. And once people in the labor force start to have a similar epiphany (ie-you were never going to get the job in the first place, it's already reserved for her BFF) the snide, little 24 HR ditz asking people for their Facebook password, might get a well-deserved lecture about shoving applications where the sun doesn't shine instead of compliance.
Of course I have grand dreams of millions of job interviewees telling HR to shove it where the sun doesn't shine so that employers might start changing their tune. But, alas, that is truly wishful thinking on my part.