Miles Taylor has outed himself as the person who wrote an anonymous letter criticizing Trump and his campaign from within the administration.
He also left to work at Google and has gone on leave to support Joe Biden against Trump.
"Miles Taylor, President Donald Trump’s former homeland security chief of staff and current Google staffer who became a controversial figure within the company for his work on Trump’s child separation policies, is taking a leave from Google until after the presidential election.
Taylor appeared in an anti-Trump ad Monday and backed Joe Biden for president, drawing the president’s ire on Twitter on Tuesday morning. Taylor will use his time off to engage in more political activity, according to a source familiar with the situation. He’ll then continue a new role he recently took after he returns to Google."