However, security sources say Mr Steele became increasingly frustrated that the FBI was failing to take action on the intelligence from others as well as him.
He came to believe there was a cover-up: that a cabal within the Bureau blocked a thorough inquiry into Mr Trump, focusing instead on the investigation into Hillary Clintons emails.
By late July and early August, MI6 was also receiving information about Mr Trump. By September, information to the FBI began to grow in volume: Mr Steele compiled a set of his memos into one document and passed it to his contacts at the FBI.
But there seemed to be little progress in a proper inquiry into Mr Trump. The Bureau, instead, seemed to be devoting their resources in the pursuit of Hillary Clintons email transgressions.
The New York office, in particular, appeared to be on a crusade against Ms Clinton. Some of its agents had a long working relationship with Rudy Giuliani by then a member of the Trump campaign since his days as public prosecutor and then-Mayor of the city.
As the election approached, FBI director James Comey made public his bombshell letter saying that Ms Clinton would face another email investigation. Two days before that, Mr Giuliani, then a part of the Trump team, talked about a surprise or two youre going to hear about in the next few days.
https://www.theguardian.com/us-news/2016/nov/03/fbi-leaks-hillary-clinton-james-comey-donald-trump
[link:https://www.independent.co.uk/news/world/americas/donald-trump-russia-dossier-file-investigation-hacking-christopher-steele-mi6-a7526901.html|]