gerenme / E+ via Getty Images This article will be updated throughout the day, so check back often for more daily updates. The Vanguard S&P 500 ETF (NYSEMKT: VOO) opened 0.1% higher on Thursday as it attempted to string together a third straight day of gains. Investors learned yesterday that President Donald Trump will ease regulation in the automotive sector, proposing relaxed "CAFE" fuel efficiency standards for the nation's automakers, in an effort to make cars and trucks more affordable to consumers ...