Originally Posted by MIdreamer

My parents are around 55 years old. Lets say after ten years of waiting, I can START to apply for citizenship, which will probably take 1 or 2 years. After I become a citizen and want to petition my parents, they have to go back to their country of birth and serve a 10 years ban and start the process of coming to U.S. which is not guaranteed. How old will they be when they finally get their paper?