Uvalde (United States) (AFP) – US President Joe Biden arrived Sunday in Uvalde to console residents mourning 19 children and two teachers who were gunned down at an elementary school in the small Texas town. Biden and First Lady Jill Biden were to visit a memorial outside the school and attend a Catholic Mass, as well as meet with first responders and mourning relatives of the dead. Harrowing accounts emerged of the ordeal faced by survivors of Tuesday’s attack, as Biden called for action to prevent future massacres in a country where efforts to tighten firearms regulations have repeatedly fai…