Your son is in very serious trouble! He should consult with and retain an attorney well versed in federal criminal practice in the Federal District Courts where he was charged!
This would be best addressed to attorneys licensed in Texas. It sounds as if he has an attorney. You should discuss this with him/her.
Michael L. Doyle
Please get your son an experienced criminal defense attorney as soon as possible. With that amount of weight your son is looking at significant jail time. The amount of his bail should be a big clue to you and your husband that this is a vey serious case. Feel free to post additional questions as his should not be taken lightly by you.
Paul A. Bauer, III