Trump seeks political shot in the arm in vaccine push
President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

Jul. 27, 2020 03:56 PM EDT
President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

Jul. 27, 2020 03:48 PM EDT
President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

Jul. 27, 2020 04:05 PM EDT
Vice President Mike Pence, second from left, speaks during a news conference as Rep. Mario Diaz-Balart, R-Fla., left, Food and Drug Administration Commissioner Dr. Stephen Hahn, second from left, and Florida Gov. Ron DeSantis, right, look on at the University of Miami Miller School of Medicine
 Don Soffer Clinical Research Center, Monday, July 27, 2020, in Miami. Pence was in Florida to mark the beginning of Phase III trials for a coronavirus vaccine. (AP Photo/Wilfredo Lee)

Vice President Mike Pence, second from left, speaks during a news conference as Rep. Mario Diaz-Balart, R-Fla., left, Food and Drug Administration Commissioner Dr. Stephen Hahn, second from left, and Florida Gov. Ron DeSantis, right, look on at the University of Miami Miller School of Medicine
 Don Soffer Clinical Research Center, Monday, July 27, 2020, in Miami. Pence was in Florida to mark the beginning of Phase III trials for a coronavirus vaccine. (AP Photo/Wilfredo Lee)

Jul. 27, 2020 03:28 PM EDT
Vice President Mike Pence takes off his mask before speaking during a news conference at the University of Miami Miller School of Medicine Don Soffer Clinical Research Center, Monday, July 27, 2020, in Miami. Pence was in Florida to mark the beginning of Phase III trials for a coronavirus vaccine. (AP Photo/Wilfredo Lee)

Vice President Mike Pence takes off his mask before speaking during a news conference at the University of Miami Miller School of Medicine Don Soffer Clinical Research Center, Monday, July 27, 2020, in Miami. Pence was in Florida to mark the beginning of Phase III trials for a coronavirus vaccine. (AP Photo/Wilfredo Lee)

Jul. 27, 2020 03:26 PM EDT