Mealey's (July 13, 2021, 8:34 PM EDT) -- WASHINGTON, D.C. — The revoking of a Trump-era executive order banning the TikTok social network app from the United States moots a 10-month old preliminary injunction halting enforcement of the ban, President Joseph R. Biden Jr. tells the District of Columbia Circuit U.S. Court of Appeals in a July 12 unopposed motion to voluntarily dismiss the appeal that was filed by his predecessor....