My step-son and his fiancee are coming the US to visit from Germany. He is a US citizen as well so we have never had to worry about visas. We know she can come here for 90 days to visit, but they are wondering about an esta visa and what it entails, and how hard it is to get a fiancee visa if they decide they want to stay here. Our step-son would eventually like to live here in the US, but wants his future wife to love it here as much as he does before they make any decisions. Thanks for any help.