 Today, amid calls for him to drop out of the election, Biden sent a letter to Democrats addressing concern about his age and says that he's firmly committed to staying in the race. And nothing says I'm young like writing a sternly worded letter. On parchment with a quill pen and dropping it in the mailbox in front of the White House. That's Joe Biden. He's hanging in there. He's digging his fingernails into the leather top on the Resolute desk.