President Joe Biden is facing a unique set of challenges as he prepares to run for reelection. The most unique of all: No one his age has ever run for president. And voters are worried, even those who give him credit for an improving economy. It’s also worth pointing out that Donald Trump is 77, and has been afflicted by more than the usual number of gaffes lately. On Capitol Hill, the GOP’s new House Speaker, Mike Johnson, is a full week into the job and working to regain order. But the ideological divide among House Republicans is now attracting attention in the upper chamber after GOP anger over Alabama Senator Tommy Tuberville stalling military promotions erupted on the Senate floor. Joining the editor in chief of The Atlantic and moderator, Jeffrey Goldberg, this week to discuss this and more are Dan Balz, a chief correspondent at The Washington Post; Adam Harris, a staff writer at The Atlantic; Susan Page, the Washington bureau chief at USA Today; and Alex Thompson, a national political correspondent at …