U.S. stocks moved broadly higher in morning trading Friday ahead of the presidential inauguration of Donald Trump. An overall improvement in quarterly results so far this corporate earnings season as well as optimism over the Trump inauguration helped lift stocks, said Sam Stovall, chief investment strategist at CFRA Research. Investors will be looking for clues in Trump's midday inauguration speech about his plans on fiscal stimulus, tax cuts and trade. [...] the possibility of increased tariffs or trade restrictions could mean drops in profits for big U.S.