Biden administration officials said Sunday that the U.S. is entering a new phase of the pandemic in which many vaccinated Americans can begin returning to normal activities and signaled that the federal government will further relax mask-wearing recommendations as more people get shots. “I would say we are turning the corner,” Jeff Zients, President Biden’s Covid-19 coordinator, told CNN’s “State of the Union.” The administration said last week it is focused on helping hesitant and hard-to-reach Americans get shots, with a goal of having 70% of the adult population receive at least one dose by July 4.