As soon as I heard Republican vice presidential candidate JD Vance smearing the military service of his opponent, Minnesota Gov. Tim Walz, all I could think was: Seriously? Are we really doing this again? Are we really going to allow Republicans — who are freaking out now that their presumed glide path back to the White House has become a very bumpy road — to slime Walz the way they slimed Vietnam veteran John Kerry 20 years ago? “When Tim Walz was asked by his country to go to Iraq, do you know what he did?” Vance said last week...