There are several positions on this:
Criminal Charges:
International Gun Running
Accessory before the fact, Murder 1st ( Law Enforcement Officer in Official capacity
Accessroy after the fact , Murder 1st ( Law Enforcement Officer in Official capacity
Obstructing Governmental Adminsitration
Obstructing Governmental Investigation
Other Charges :
lying to Congressional committee
obstructing congressional investigation
STILL Other CHARGES:
loss of Attourney license (loss of career)
Civil Liablility ( monetary civil lawsuit : $$$ )
Lets not forget the fact Mexico wants names as well.