Americans will head to the polls this November with a much different view on the nation's biggest problems than in 2016. A new survey conducted by Pew Research Center found that more U.S. adults view drug addiction, college affordability, sexism, and racism as "very big" problems than did two years ago. Just before the 2016 presidential election, 56 percent of Americans already viewed drug addiction as being a "very big" problem, but now, that number has risen to 68 percent.