Although Italy, Spain and China have higher death tolls, the US now has nearly 165,000 infections – more than anywhere else in the world.
A US naval ship with 1,000 hospital beds has arrived in New York to provide relief to overwhelmed hospitals.
Emergency medical centres have been set up across the country.
However, health workers say they are running out of supplies and testing kits.
President Donald Trump, who has been criticised for downplaying the crisis, said the number of cases would not reach its peak for another two weeks.
The pandemic has become a major political issue.
Can the US prevent the crisis from spiralling out of control?
Presenter: Mohammed Jamjoom
Julie Fischer – Associate research professor of microbiology and immunology at Georgetown University Medical Center
Dr Peter Drobac – Co-founder and first executive director of the University of Global Health Equity in Rwanda
Adam Goodman – US Republican strategist