President Biden begged vaccine-reluctant Americans to roll up their sleeves for COVID shots Saturday as he marked what he called a “painful milestone”: the 700,000th death associated with the coronavirus pandemic. “We must not become numb to the sorrow,” Biden said in a statement issued by the White House. “We remember all those we have lost to this pandemic and we pray for their loved ones left behind who are missing a piece of their soul.” He asserted that “we have made extraordinary progress in our fight against COVID-19 over the last eight months because of the vaccines.” About 300,000...