Hi, looking for some advice for my US partner. She has a job in the U.K. so pays U.K. taxes. She did some contract work this year with a U.S. company so is also filing some taxes in America. I wanted to know if she could put the money she earns from her U.K. job into an ISA. I know a lot of ISAs don’t allow US nationals but we found a few that do. Additionally, if you don’t think opening an ISA is a good idea - does anyone recommend the best way to put some of her savings into an ETF such as a Roth IRA or something think that?