I've been using the NY Times data set located here. The Twitter ban announcement is here. It's clear that January 8, 2021 was the peak new confirmed cases and that this is the day Trump was banned from Twitter. Is this just an incredible coincidence, or was he really driving behavior that aggravated the situation?
UPDATE: Of course in my rush to post I failed to consider the timing of the vaccines. The US vaccination program started December 14, 2020. December 28, would have been the start of second doses. January 11th would be 2 weeks after that.
Update 2: Here is an interesting article on when we could reach heard immunity --> "When Could the United States Reach Heard Immunity? It's Complicated - NY Times"