States don't recognize federal IDs? I'll need a source on that.
That's not remotely close to what I said. Let me start with a basic piece of information.
1) Who is eligible to vote (beyond the basic constitutional req) and the criteria by which they are allowed to vote is determined by the states, not the federal government. Got it?
2) The critieria by which people are allowed to vote includes what types of identification is required. Got it?
3) If a state does not formally recognize a document or card for the specific purpose of voting identification, it is not going to be allowed for the purpose of Voter ID. Got it?
4) Right now there is no federal ID. This means that no state has formally recognized a federal ID for the specific purpose of voting identification. Still with me?
5) If the federal government created and issued a federal ID card, it would not be a state ID because the Fed and the states are different. Cool?
6) The individual states would have to vote, state by state, to adopt the federal ID for the specific purpose of voting identification.
I numbered the elements so that if you have any confusion about them, we can focus on that specific step.
So, the states could recognize the existence of a federal ID as "an ID card issued by the federal government" but that ID card would have zero validity in identifying a person under state election law. State election law or regulations would have to be changed, through the state, to add the federal card to the list of approved documents for their local elections.