Melania Trump, wife of Donald Trump, arrives before the second presidential debate between Republi can presidential nominee Donald Trump and Democratic presidential nominee Hillary Clinton at Washington University in St. Louis, Sunday, Oct. 9, 2016.(AP Photo/Patrick Semansky)
In this photo provided by Washington University in St. Louis is Murray Weidenbaum, a former White House economic adviser who counseled five U.S. presidents before returning to academia. Washington University in St. Louis, where Weidenbaum worked for decades and continued to teach until a few weeks ago, announced his death Thursday, March 25, 2014. The school did not reveal the cause of death. He was 87. (AP Photo/Courtesy Washington University in St. Louis)