The US is now conducting over 600,000 tests per day, and that might be enough to allow test-and-trace in some areas. Based on the experience of other countries, the percent positive needs to be well under 5% to really push down new infections, so the US still needs to increase the number of tests per day significantly.
There were 633,974 test results reported over the last 24 hours.
There were 63,007 positive tests.
Click on graph for larger image.
This data is from the COVID Tracking Project.
The percent positive over the last 24 hours was 9.9% (red line).
For the status of contact tracing by state, check out testandtrace.com.