White House Chief of Staff says next 60 days will 'present challenges'

White House Chief of Staff says next 60 days will 'present challenges' White House Chief of Staff Susie Wiles says that while the next 60 days will "present challenges", the agreement between the US and Iran was a "great step forward". There have been have so many memorable days and proud accomplishments for the President and his team. The G7 was a huge success and an opportunity to make sure the members and other participates see “America First” in action.