"Mr Meadows has already given evidence before the grand jury and is said to be cooperating with the investigation into his former boss. It is understood that the former North Carolina congressman will plead guilty to several federal charges as part of a deal for which he has already received limited immunity in exchange for his testimony."

https://www.independent.co.uk/news/world/americas/us-politics/trump-indictment-espionage-prosecution-charges-b2353397.html