An interesting tidbit for those who claim that the DOJ was "threatening the President" with resignations.
spin that thing!!
They weren't threatening, they were promising. The very next paragraph after your quote reads:
You didn't have them (the law enforcement officials) marching up and threatening insubordination," said the official, who is familiar with discussions between the House and Justice Department. "It was more like `Well, if that happens, than this will happen."'
Of course submitting one's resignation is not insubordination anyway. It's standing on one's principals. Insubordination is failure to follow the lead of one's supperiors, while continuing to hold one's position in an organization.