Here is what I have been able to find:
I take it you are a US citizen? And perhaps even a Canadian one as well?
Citizenship by marriage
If the couple has been living in France for a year, after a period of two year's marriage to a French citizen, it is possible to make a declaration of French citizenship by marriage. If the couple is living outside of France, a three year waiting period is required. In addition to the many documents required to prove both the applicants nationality and the spouse's french nationality, there is a requirement for competency in the French language.
The declaration of citizenship is made by the couple to the local court, or the French consulate if overseas. The declaration is accepted or rejected by decision of the Ministry of Justice.
So basically, after your 3 years are up, you and he must go to a French Consulate in the US and apply in person with all your papers.
Also, you must be able to speak French.