In many states these are available without proof of citizenship. When people say proof of citizenship they usually mean a passport or REALID.
https://factually.co/fact-checks/politics/will-save-act-allo...
Which is why I'm pretty sure it's not gonna pass. Both republicans and democrats depend heavily on mass votes from, let's just say, a lot of people who are, generally speaking, not the sort to have passports.