Joe Biden is a crisis in the making. The last president to run for reelection who was so obviously incapable of serving another four years was FDR in 1944. But Roosevelt was in the midst of ably managing a world war and‚ as it turned out‚ chose his vice president wisely. Biden’s mental and physical diminishment has been clear for some time and has been even more alarming the last several weeks. The Robert Hur report on his mishandling of classified documents underlined his reduced state...