Bannon's exit not seen to signal Trump shift to center

By John Walcott and Steve HollandWASHINGTON/BRIDGEWATER, N.J. (Reuters) - President Donald Trump's ouster of chief strategist Steve Bannon is unlikely to mark the abandonment of the administration's "America First" agenda that has unnerved investors and trade partners and split the White House into nationalist and globalist camps.Within hours of leaving Trump's administration on Friday, Bannon was back at the helm of Breitbart News, the hard-right news site he ran before becoming the main archit