Being interviewed for someone's clearance six years ago:
Interviewer: Has $subject ever been a part of a plot to overthrow the US government?
Me: HAHA. No.
Interviewer: HAHA. Yeah, I know. We have to ask though.
Being interviewed for someone's clearance three years ago:
Interviewer: Has $subject ever been a part of a plot to overthrow the US government?
Me: No.
Interviewer: Good.
Being interviewed for someone's clearance now:
Interviewer: Has $subject ever been a part of a plot to overthrow the US government?
Me: No.
Interviewer: That's too bad. Thanks for your time.