I support UBI broadly speaking, but one thing I worry about with UBI are the unforeseen consequences on immigration. Say UBI is in place for citizens, but not f

I support UBI broadly speaking, but one thing I worry about with UBI are the unforeseen consequences on immigration. Say UBI is in place for citizens, but not for greencard holders. You've created a massive incentive for non-UBI workers to enter the labor force, and a massive incentive for companies to import as many workers as they can (who do not have access to UBI, and therefore cannot negotiate a higher wage). I'm not sure I want to live in a country where UBI "citizens" pay for cheaply produced goods and services made by non-UBI migrants desperate to earn citizenship, that seems like precisely the kind of two-tier economy UBI is designed to avoid. Anyway, food for thought.