Originally posted by: Ynog
Big clearance things for any level are.
US Citizen
Have you had one revoked - if you have your screwed
They look at high volume travel to neutral or unfriendly countries,
Obviously crimes.
My personal favorite, Have you or are you currently a member or officier of a group who plans to or thinks of overthrowing the government (Y/N)?
Edit: Thought of some other things.
Another big one, if you are married to a foreign national.
They look into that.
other stuff:
recent history of financial irresponsibility.
foreign nationals in family (other than spouse).
recent history of serious mental illness.
recent involvement with drugs.
recent problems with alcohol.
if you're hired, the hiring organization pays for it, although you have
to fill out some massive forms.
the key thing is: DON'T LIE. you can even have felony convictions on your
record & be given a clearance (provided you're rehabilitated),
but lies are practically inexcusable.
<--- has had one for years.