Given that national security letters originate from the patriot act, I presume the consequences are grave. Certainly, jail time seems probable. In general, if a

Given that national security letters originate from the patriot act, I presume the consequences are grave. Certainly, jail time seems probable. In general, if a court says do X, and you refuse, that is contempt of court. The court can then decide to fine you, and put you in jail until you are willing to comply. Given gag-orders, and waving the word 'national security'. I expect the court proceeding dealing with your arrest / punishment would be sealed. Heck, if certain things are marked as US government secrets and you publish them, that is treason which can be punished by death.