While strategist Steve Bannon, who repeatedly preached to Trump the importance of fulfilling his campaign promises, left the White House shortly after Kelly's arrival, the president has made aggressive moves on some of the issues Bannon promoted. Trump said he would shut down the government next month unless Republicans give him money to build a wall along the U.S.-Mexico border and he issued a controversial pardon for former Sheriff Joe Arpaio of Arizona. Trump is also considering rolling back deportation protections for young people brought to the U.S. illegally as children, a step he previously intimated to top advisers that he would rather avoid.