Hello! We are just starting the process to obtain US citizenship for my husband. He came to the US on a K1 visa in April of 2012 and obtained his Conditional Permanent Residency in April of 2013. Obviously, more than five years have passed. If we apply for his citizenship now, will it still be on the basis of marriage to a US citizen? Or will it just be on the basis of five years as a legal permanent resident. There are different requirements for the two, so I want to make sure I don't omit anything I need to send. Thank you in advance for your help!