The POD should be in the early 1600s. It was in 1627 when Richelieu forbade all Protestant settlement in North America. Prior to that time, many (a majority?) of French settlers were Protestants, so this was a major change. Richelieu had a practical reason for this: he was then at war with the Huguenots in the southwest, who in turn were allied with the English, so he didn't trust them in France's colonies.
If Louis XIII could have found a way to implement the terms of the Edict of Nantes in a way that did not inflame Protestant sentiment, leading to the 1620s rebellion, Richelieu's ban on Protestant emigration wouldn't have been necessary. Or perhaps the rebellion could have happened but the government would have been more forgiving after and rescinded the ban?
In any event, the ban on Protestant emigration affected both countries, because many of the Huguenots went to the English colonies instead. There were significant Huguenot communities in New York, Virginia, and the Carolinas. So the ban not only limited France's colonial population but bolstered England's.
If Louis XIII could have found a way to implement the terms of the Edict of Nantes in a way that did not inflame Protestant sentiment, leading to the 1620s rebellion, Richelieu's ban on Protestant emigration wouldn't have been necessary. Or perhaps the rebellion could have happened but the government would have been more forgiving after and rescinded the ban?
In any event, the ban on Protestant emigration affected both countries, because many of the Huguenots went to the English colonies instead. There were significant Huguenot communities in New York, Virginia, and the Carolinas. So the ban not only limited France's colonial population but bolstered England's.