Summary: Tuesday on the NewsHour, Michigan State University becomes the site of the latest mass shooting in America after a gunman kills three and wounds several more. Former South Carolina Gov. Nikki Haley announces a bid for the White House. Plus, we speak with a teenager whose family is suing social media companies, alleging that the quest for more likes contributed to her eating disorder. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
