Facing a once-in-a-century pandemic, a crisis that some have likened to a world war, the U.S. is fortunate to have President Trump in charge. I have witnessed him make the tough decisions necessary at every turn to keep America safe. Seven of these decisions stand out.

First, the president assembled a team. On Jan. 29 he established the White House Coronavirus Task Force. Now under Vice President Mike Pence’s leadership, the task force has consolidated the government’s public-health expertise and responded in real time to...