During a September 16, 2020 press conference, Trump blamed blue states for inflating US COVID-19 death figures.

…the blue states had tremendous death rates. If you take the blue states out, we’re at a level that I don’t think anybody in the world would be at. We’re really at a very low level. But some of the states, they were blue states and blue-state-managed.

The Northeast and West Coast saw the first major outbreaks of COVID-19. On the day of his remarks, the United States totaled 6,855,605 cases and 201,351 deaths.  Only counting states that voted for Trump in 2016, there was a total of 96,407 deaths.

Of the 10 states with the most COVID-19 deaths (NY, NJ, TX, CA, FL, MA, IL, PA, MI, GA) half had Republican governors (TX, FL, MA, PA, GA) and half voted for Trump in the 2016 election (TX, FL, PA, MI, GA).

Axios – Trump blames “blue states” for high coronavirus cases in U.S.
New York Magazine – Trump Says U.S. COVID Response Would Improve ‘If You Took the Blue States Out’
ABC News – Trump called ‘demented’ after blaming ‘blue states’ for coronavirus death toll
WhiteHouse.gov – Remarks by President Trump in Press Briefing | September 16, 2020
Worldometer – Coronavirus, United States