Interesting issue. Even if the marriage would become valid under Illionois law, wouldn't there still be an issue with the I-130 for US CIS? This is more of a follow up question to Mr. Dixler.

Also, contact a North Carolina family law attorney. In Connecticut we would have to get the prior marriage annulled, and then you would have to remarry. There would also be an issue as to the validity of the Canadian divorce; in Connecticut one party to the divorce must reside in the jurisdiction where the divorce was granted. USCIS applies Connecticut law to determine the validity of marriages for applicants who reside in Connecticut. It is complicated, see a lawyer who understands both immigration and family law.