Obama, Trump to set differences aside for awkward White House meeting

By Jeff Mason and Steve Holland WASHINGTON (Reuters) - U.S. President Barack Obama will host an awkward meeting with President-elect Donald Trump at the White House on Thursday in their first public step toward a peaceful transition of power after the Republican businessman's surprise election victory. Trump led the "birther" movement that questioned Obama's U.S. citizenship and has pledged to overturn the Democratic president's signature policy achievements after he takes office on Jan. 20 Obam