You have a difficult and lengthy process to fix his status. Chances are slim to none that you will be successful however, you should consult with an experienced immigration attorney.
The answer provided here is general in nature and does not take into account other factors that may need to be reviewed for a more precise answer. You should consult with an immigration attorney before taking any action. The answer here is not intended to create an attorney-client relationship.
Drug conviction and re entry convictions and deportation, make this case almost not possible. It is recommended to consult in attorney for evaluation and consideration of a waiver for non immigrants.
The above is intended as general information only and cannot be relied upon as legal advice. Laws change constantly and vary from state to state. The legal principals discussed may differ substantially from your personal situation. Therefore You should consult an attorney about your particular situation. (212)880-1538 Law Offices of Tsirina Goroshit is a Full Service Immigration Law Office, at 275 Madison Avenue, 4th Floor New York, NY 10016
At best it would require your husband live outside the U.S. for ten years before you could fix him. At worst you could never fix his status. With two drug felonies it is highly unlikely you will be successful. You would need a skilled immigration attorney and a skilled criminal attorney.