WASHINGTON -- President Joe Biden spent his third week in office visiting the Pentagon, touring the National Institutes of Health and working on the administration’s COVID-19 response. He capped it off by beating one of his granddaughters at Mario Kart during his first presidential visit to Camp David, the historic retreat for U.S. leaders. Biden told reporters before departing Washington for the compound that his main plans for the long weekend were to “just hang out with the family and do what we always do.” His granddaughter Naomi posted on her Instagram Saturday night a clip of Biden playing the...