The answer to most of your question lies in whether your husband actually received probation - which is a conviction - or supervision - which is not. People often get the terms confused. If your husband has an otherwise clean record and received supervision, he should be able to have the charge expunged. Additionally, as for the license, it will be a but easier to explain the supervision than a conviction. He must answer honestly, regardless of the disposition of his case but he need not answer that he was convicted if he received supervision.