That is the thing here.
As far as elections go, the federal government has very little to do with any facet of it. Outside of just recording the outcome of the election results of each state for federal position, they literally have no say in the elections at all. They literally do not make the rules(the states do) outside of how many electors each state gets or representatives in the House or when the day of the election is. And that is enshrined in the US Constitution, not by any actual law Congress has passed.
The states decide on how districts are setup, who gets to be their representatives, their senators, who their electors are and how they vote, whether they can have a split amount or all votes go towards a candidate, the deadlines of when the primaries within their state are, when people can actually register to vote, the requirements for said registration and pretty much everything else outside of what I stated above.
So no, a national voter ID law wouldn't have any teeth on it because it would be immediately challenged on the grounds that states are the final arbiters of the elections within their state borders. And I can already see at least 5 of the SC Justices vote to keep it that way.
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The best part about Donalds DEI erasure initiative is that it is also targeting accessibility initiatives. Which is ironic when it comes to the VA because outside of Medicare and Medicaid, it literally has the highest need of accessibility of any federal agency. So to remove that initiative is once again showing veterans how much the GOP, Trump and the rest of the gaggle of ghouls hate veterans and anyone else with any form of disability.