It is reported by Bloomberg, citing three sources.

JUST IN: Judge Committee, Robert Mueller is balking at a public meeting, pushing it for https://t.co/JmYHWc3TuR

- Bloomberg (@business) May 21, 2019

As noted, Muller told the legal committee of the House of Representatives that he was not ready to publicly discuss his latest report on “interference” and did not want to be dragged into a political struggle.

Earlier, the head of the US Department of Justice, William Barr, expressed surprise at the fact that, according to him, Muller did not answer one of the main questions of the investigation about "Russian interference".