Fourteen Senate Democrats sent a letter to tech firms Wednesday demanding answers to reports about the collection and sale of location data of people who have visited abortion clinics. Sen. Elizabeth Warren (D-Massachusetts) led the lawmakers in writing letters to the two firms, expressing concerns about the data as Roe v. Wade faces being overturned by the Supreme Court. If Roe is struck down, over half of states are likely to ban abortion by automatic trigger laws or new legislation. “Especially in the wake of the Supreme Court’s leaked draft opinion overturning Roe v. Wade, your company’s sale of such…