You need to provide a divorce decree to USCIS showing that your first marriage is over. Then you also need your marriage certificate for your second wife. It is best to consult an immigration attorney.
I agree with my colleague. If you ever wish to apply for permanent residence in the US this misdemeanor could negatively impact your application. It is best to hire a good criminal attorney who will fight this charge.
Assuming that you are a US citizen, after marriage you could file a green card application for her. It is best to hire an immigration attorney to assist you with this process as it will help you to avoid delays.