Steele worked as an undercover agent for MI6 for many years in Russia and had contacts there. The opposition research company that hired Steele for background info. on Trump, was the same company the Republicans used for background research on candidates.
How does that change the fact that the "Steele Dossier" was largely drunken barroom gossip supplied by a drunk who was paid by the Clinton Campaign?
And how does that change the fact that the FBI either knew the "Dossier" was unreliable partisan-paid gossip or knew they had not verified the contents, and on either count was utterly wrong to deceptively manipulate what was said to Trump in supposed briefings that were in fact spy sessions?
There was no justification for spying on Trump. There was no justification for the FISA warrants against Trump Campaign team members. There was no justification for trying to entrap Trump's foreign adviser Flynn. There was no justification for the Mueller shamvestigation happening. All this @#$% was based on the "Steele Dossier" that the FBI knew was almost entirely unverified and at some point also learned was partisan-paid drunken barroom gossip.
There was no point at which the FBI was justified in taking the actions they did against the Trump Campaign - not the spying, not the FISA warrants, not the attempt to entrap Flynn, not the Mueller shamvestigation.