South Carolina's mail-in ballot age exemption for voters over 65 was struck down as a 26th Amendment violation, but the state plans to appeal further.
https://www.foxnews.com/politics/south-carolina-mail-in-voting-law-illegally-discriminates-appeals-court-rules
https://www.foxnews.com/politics/south-carolina-mail-in-voting-law-illegally-discriminates-appeals-court-rules