I do not believe that to be the case actually. Many states have it now, without such a requirement.
My thought was to shut down any possible descrimination suits under the 14th Amendment and the 1965 Voting Rights Act.
I don’t want to give the courts an avenue to overturn.
We have a “must ask” requirement in Michigan but I’ve never seen anyone refuse to show ID but I don’t live in Detroit. In fact they use magnetic strip readers when we show ID.
Apparently the affidavit they have to sign if they refuse to show ID is a real concern to the fraudsters. We had illegals protesting the SOS the other day over her refusal to give them driver’s licenses and being singled out when (illegally) voting was one of their complaints.