The issue does not need to be revisited, and this grandstanding is foolish. The regulation of the franchise was never intended to be the province of the Federal Government, but the post Civil War Amendments gave the Feds sweeping authority to achieve manumission ... authority it became clear would be necessary in the face of Southern intransigence.
Those days are long over. The SCOTUS was (accidentally, it appears, on the basis of today's bizarre decisions) correct, and Republicans should let it die the quiet death it deserves.