My husband was in prison for 1st degree murder, can he still fix my papers?

Yes Diana. His murder conviction or his probation status should not disqualify him from sponsoring you, as long as the crime didn't involve violence and/or sexual exploitation of a minor child under the Adam Walsh Act. Did you enter the country legally? Work with an attorney. Some of us charge a very affordable flat fee for representation from start to finish, even lower that the government filing fees. Counsel anywhere in the USA can represent you. Good luck.