@parados,
This is why ID is so important. You don't have to worry about anyone lying if you require ID to register and vote, with a system check to a few other govt depts. If the US govt would allow access to the their database of known or suspected immigrants, like Florida has been asking for, then we would know who was a citizen and who wasn't. You change the laws. There is nothing wrong with a cross check on a federal database. After all, isn't that what happens when I purchase a gun? I have to go through a background check on a state and federal database?