D.C. Mayor Muriel Bowser left the District for Martha’s Vineyard on Wednesday after President Donald Trump federalized the police department. A spokesperson for the mayor said she had a family obligation, had to pick up her daughter and will return on Friday. Bowser gave more details about that obligation later Thursday after Trump posted a screenshot of reporting by News4's Mark Segraves about her leaving town. "This week, I cancelled a scheduled family trip to lead our city's crisis management efforts. I also made the more difficult decision to not disrupt my daughter's camp plans. I needed to get to...