Homeland Security Secretary Kirstjen Nielsen is resigning. In a tweet on Sunday President Donald Trump said, “Secretary of Homeland Security Kirstjen Nielsen will be leaving her position, and I would like to thank her for her service." Kevin McAleenan, commissioner of Customs and Border Protection, will become acting secretary pending confirmation of Nielsen's successor, Trump said.» Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc
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