The memorandum suggested one of the confidential informants — called Confidential Human Source 1 (CSH1) in the filing — played a “material role in the government’s investigation.” ...

The document Republicans are focused on is what is known as an FD-1023 form, which is used by federal agents to record tips and information they receive from confidential human sources.

The confidential source turned out to be an FBI informant. After he reported the incident to authorities, the victim and his son were taken into protective custody.

Helson served as Danchenko’s handler from 2017 through 2020, a time period in which Danchenko was a paid “confidential human source” for the FBI.

Confidential Human Source mentions Zlochevsky — this is Mykola Zlochevsky, who was the founder of Burisma — might have difficulty explaining suspicious wire transfers that may evidence any ...

The document Republicans are focused on is what is known as an FD-1023 form, which is used by federal agents to record tips and information they receive from confidential human sources.