Easy.

To hold top level clearances, your record must be squeaky clean.
No criminal history, no excessive debts, do nothing that the opposition
can use as leverage against you. No drug or alcohol issues. No marriage,
affairs, relationships with foreign citizens.

While I don't know the details on his affair, it's basically seen as a trust
issue and they would likely replace him anyway. He knows this and just
decided to step down on his own terms before he was forced out.

Last edited by Daye; 11/09/12 01:59 PM.