PHILADELPHIA, PA - JULY 25: A delegate holds up signs that read "Trans-Pacific Partnership (TPP)" while another delegate holds a sign in support of Sen. Bernie Sanders (I-VT) on the first day of the Democratic National Convention at the Wells Fargo Center, July 25, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Chip Somodevilla/Getty Images)
