The tests could allow thousands of people to leave German states' coronavirus lockdowns early and return to work and other activities.
"If we need to push the date forward, we will push the date forward," Dr. Anthony Fauci said on CNN Sunday.
Some of Trump's advisors and allies are talking about barring coronavirus fighting equipment from international trade. That could start a trade war.
The US is one of the hardest-hit countries in the world by the coronavirus pandemic. But its death rate from the COVID-19 illness is low: 1.6%.
The researchers warned that governments and individuals must take immediate steps like lockdowns and staying home to stem the impacts of the pandemic.