top of the hour, i'm poppy harlow, live in the nation's capital, with special coverage as we enter our phase of donald trump's presidency. the president and first lady picking the sinatra classic, "my way," for their first dance. vice president mike pence and his wife, karen, joined them. the president got straight to work signing an executive order aimed at fulfilling one of the campaign promises, rolling back obamacare. two cabinet picks, general james mattis has been confirmed. as the fight looms over the rest of his cabinet, we are covering it all live from the nation's capital and we begin right now.