The president says we should start Phase 1 of re-opening the country state-by-state, when (among other things) a state reaches a "Downward trajectory of documented cases within a 14-day period" or a "Downward trajectory of positive tests as a percent of total tests within a 14-day period (flat or increasing volume of tests)." (Source)
Since I couldn't easily find this elsewhere, I've pulled together the data on states and how many consecutive days they have with decreasing numbers of positive cases (both as a count of cases and positive cases as a percentage of tests). Click one of the links below to see the data sorted by the order you'd like.
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Data courtesy of:
The COVID Tracking Project (State Data)
The New York Times (County Data)