I have sponsored my wife who has overstayed her visa in the USA. Her entire file was processed in NY office and her file was approved and the passport has been stamped with the Canadian Visa. She will also be getting the PR card shortly, my question is that since she has overstayed her visa for over 4 years in the USA is it going to be difficult for her to get the Visa for the USA once she has received her PR card. Will it make a difference if she enters Canada from USA or from India ( which is her country of residence ).