History remembers Jimmy Carter’s post-presidency more kindly than his presidency for a host of reasons. One could certainly be that as president, Carter didn’t champion election integrity laws–but reforms such as voter ID are nevertheless a lasting part of his legacy. It was 1977 when a young senator of Carter’s own party–Joe Biden–explained his opposition to a Carter proposal to allow Election Day voter registration. The first-term Delaware Democrat proclaimed, a “reservation I have and one...