I was born and have spent my entire 46 years a Canadian citizen. I am now interested in getting my American citizenship. My question is, Both my grandfathers were born and lived in the United States. One immigrated to Canada as an infant and the other was about 20 years old when he came to Canada, leaving behind the rest of his family. Could this have a positive impact on my application for American citizenship?

Jack, there are several ways of applying for US citizenship through family. However, depending on the nationality there is a backlog, and if they are not alive, I am not sure if you can do it at all. If you have any immediate relatives living in the United States, you should see if you can apply through them. If not, the only way for you to become a US citizen would be to get a job which could lead to a green card/citizenship (H-1B, E1/E2, etc). If not, I am afraid you will be a Canadian citizen only.

Heyden