Back In The Day, I had to take a polygraph exam before Three Letter Intelligence Agency granted me a security clearance, and had to take another one - this time for Counter-Espionage purposes several years later. The examiners were extremely interested in my sexual orientation. That seemed odd, until someone explained that they couldn't care less what I did in my extra-curricular activities.
They wanted to know if I were in the closet, because it would mean that I could be blackmailed. Transparently gay was no problem getting a Top Secret clearance, because everyone if already knew, the KGB would have no leverage.
The Czar of Muscovy is absolutely correct that Rep. Weiner should resign, because his wife is Chief of Staff to the Secretary of State, and therefore is a huge blackmail target. With his clear inability to exercise sober judgement, our foreign policy is at risk.
The only other thing I'll add is that had Rep. Weiner tweeted a pic of his junk while he was driving, that would have been epic.