Markwayne MullinPresident Trump will participate in the swearing-in ceremony for former Senator Markwayne Mullin (R-OK) to serve as Homeland Security Secretary this afternoon. Mullin submitted his resignation from the US Senate on Monday after the Senate voted to confirm him as DHS Chief.The Senate voted 54-45 to confirm Mullin to replace former DHS Secretary Kristi Noem.JUST IN: Senate Votes 54-45 to Confirm Markwayne Mullin as DHS Chief – One Republican Votes No (VIDEO)/*! This file is auto-generated */!function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i