The House select committee investigating the January 6, 2021, attack on the US Capitol has sent a letter to former Republican House Speaker Newt Gingrich seeking his voluntary cooperation to discuss his role in promoting false claims that the 2020 presidential election had been stolen.

(SOURCE) https://www.cnn.com/2022/09/01/politics/newt-gingrich-january-6-committee-cooperation-letter/index.html