Three Democratic senators are asking leading mental health treatment apps makers to provide information on how they share their users’ data, raising concerns that patients’ information may be sold to advertising firms that could identify them individually. Senate Finance Chair Ron Wyden (D-OR) and Democratic Sens. Elizabeth Warren (MA) and Cory Booker (NJ) wrote to the companies BetterHelp and Talkspace, both online platforms for mental health treatment that include telehealth therapy through video calls or text messaging. Both BetterHelp and...