How would voter ID laws prevent non-U.S citizens from voting?

[Ail]

Kasz216 said:
Require a social security number to vote or an ID form that requires a social security number/green card number.

Neither of those are proofs that you are a US citizen. I should know, I have both and I am definitly not a citizen...

Pretty much everyone working in the US with a visa will have a social security number and can not legally vote..