UN Ambassador Nikki Haley resigns, and will leave office by the end of the year. Instagram announces it will use machine learning to limit bullying in photos and captions. Taylor Swift's surprise endorsements in Tennessee political races led to a massive spike in voter registration. Vote.org saw 65,000 registrations in the 24 hours following the pop star's midterm annoucement. The Miss America Organization revoked the licences of four states, asking them to turn over scholarship money associated with the competition.