The funding bill was paired with an unrelated voting bill that would require Americans to provide proof of citizenship when they register to vote and require states to purge non-citizens from their registration lists
Obviously it would be more secure if everyone was required to bring a paper form that they were given at their birth and most people don't even have or a super expensive document that most people also don't have. That would obviously prove that you're allowed to vote because if you weren't that would be too much of a hassle.