Steele also felt a duty to get the information

Steele also felt a duty to get the information to the F.B.I. Although Trump has tweeted that the dossier was “all cooked up by Hillary Clinton,” Steele approached the Bureau on his own. According to Simpson’s sworn testimony to the House Intelligence Committee, Steele told him in June, 2016, that he wanted to alert the U.S. government, and explained, “I’m a former intelligence officer, and we’re your closest ally.” Simpson testified that he asked to think about it for a few days; when Steele brought it up again, Simpson relented. As Simpson told the Senate Judiciary Committee, “Let’s be clear. This was not considered by me to be part of the work we were doing. This was like you’re driving to work and you see something happen and you call 911.” Steele, he said, felt “professionally obligated to do it.” Simpson went along, he testified, because Steele was the “national-security expert,” whereas he was merely “an ex-journalist.”
https://www.newyorker.com/magazine/2018/03/12...mp-dossier