NEW YORK, NY - SEPTEMBER 19: (L-R) Senior Associate Editor, The Washington Post, Lally Graham Weymouth, Director, Sylvester Comprehensive Cancer Center, University of Miami, Dr. Stephen Nimer, Chief Scientific Officer for Immunobiology, Eli Lilly & Company, Dr. Michael Kalos, Chief of the Melanoma, President and Chief Executive Officer, St. Jude Children's Research Hospital, Dr. James R. Downing and Immunotherapeutics Service Memorial Sloan-Kettering Memorial Cancer Center, Dr. Jedd Wolchok speak at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New York City. (Photo by Ben Hider/Getty Images for Concordia Summit)

NEW YORK, NY - SEPTEMBER 19: (L-R) Senior Associate Editor, The Washington Post, Lally Graham Weymouth, Director, Sylvester Comprehensive Cancer Center, University of Miami, Dr. Stephen Nimer, Chief Scientific Officer for Immunobiology, Eli Lilly & Company, Dr. Michael Kalos, Chief of the Melanoma, President and Chief Executive Officer, St. Jude Children's Research Hospital, Dr. James R. Downing and Immunotherapeutics Service Memorial Sloan-Kettering Memorial Cancer Center, Dr. Jedd Wolchok speak at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New York City. (Photo by Ben Hider/Getty Images for Concordia Summit)

NEW YORK, NY - SEPTEMBER 19: Senior Associate Editor, The Washington Post, Lally Graham Weymouth, Director, Sylvester Comprehensive Cancer Center, University of Miami, Dr. Stephen Nimer, Chief Scientific Officer for Immunobiology, Eli Lilly & Company, Dr. Michael Kalos, Chief of the Melanoma, President and Chief Executive Officer, St. Jude Children's Research Hospital, Dr. James R. Downing and Immunotherapeutics Service Memorial Sloan-Kettering Memorial Cancer Center, Dr. Jedd Wolchok speak at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New York City. (Photo by Ben Hider/Getty Images for Concordia Summit)

NEW YORK, NY - SEPTEMBER 19: (L-R) Senior Associate Editor, The Washington Post, Lally Graham Weymouth, Director, Sylvester Comprehensive Cancer Center, University of Miami, Dr. Stephen Nimer, Chief Scientific Officer for Immunobiology, Eli Lilly & Company, Dr. Michael Kalos, Chief of the Melanoma, President and Chief Executive Officer, St. Jude Children's Research Hospital, Dr. James R. Downing and Immunotherapeutics Service Memorial Sloan-Kettering Memorial Cancer Center, Dr. Jedd Wolchok speak at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New York City. (Photo by Ben Hider/Getty Images for Concordia Summit)

U.S. President Barack Obama addresses the Congressional Black Caucus Foundation's 46th annual Legislative Conference Phoenix Awards Dinner in Washington, September 17, 2016. REUTERS/Yuri Gripas

U.S. President Barack Obama addresses the Congressional Black Caucus Foundation's 46th annual Legislative Conference Phoenix Awards Dinner in Washington, September 17, 2016. REUTERS/Yuri Gripas

WASHINTON, DC - SEPTEMBER 18: U.S. President Barack Obama boards Marine 1 at the White House on September 18, 2016 in Washington, DC. The president will deliver the farewell speech of his presidency to the United Nations General Assembly on September 20 in New York City. (Photo by Dennis Brack-Pool/Getty Images)

WASHINGTON, DC - SEPTEMBER 18: Activists and family members of loved ones who died in the opioid/heroin epidemic take part in a "Fed Up!" rally at Capitol Hill on September 18, 2016 in Washington, DC. Protesters called on legistlators to provide funding for the Comprehensive Addiction and Recovery Act, which Congress passed in July without funding. Some 30,000 Americans die each year due to heroin and painkiller pill addiciton in the United States. (Photo by John Moore/Getty Images)