A senior White House official announced Wednesday he will resign following allegations by his two ex-wives of physical and emotional abuse. The official, Rob Porter, served as the staff secretary and often controlled the paper flow to President Trump’s desk, along with his daily schedule. Porter also oversaw the White House’s policy implementation process and worked closely with chief of staff John F. Kelly to try to instill discipline to the chaotic West Wing. He often spent hours of the day with Trump and frequently traveled with him on Air Force One...