Homeland Security Secretary Nielsen has resigned

President Donald Trump says Homeland Security Secretary Kirstjen Nielsen is leaving her job amid growing frustration by the administration over the number of southern border crossings.Secretary of Homeland Security Kirstjen Nielsen will be leaving her position, and I would like to thank her for her service....— Donald J. Trump (@realDonaldTrump) April 7, 2019President Donald Trump thanked her for her work in a tweet and announced U.S. Customs and Border Protection Commissioner Kevin McAlee