Like I said, its not being debated at this point that the Steele dossier was the only source used to obtain wire taps.
It was investigated, it's on a record. All they needed to do was look at the record and interview the people involved. The people involved aren't even denying it. Just denying the motive.
You still aren't getting it when it comes to the legal process and judging the truth........Let's just say for a minute that you are exactly correct, the dossier was the basis for the warrant. That basis is JUST AN ACCUSATION and it has to be independently verified. A judge would not just look at a dossier and say, here's your warrant. Someone, at least 1 FBI agent and probably more than one, has to be sworn in under oath stating that they know the accusations provided are true based on independent verification NOT just what is stated in a dossier. Then the results of a search warrant are based on actual evidence and documentation that was found......not what was stated in the dossier.
The dossier as a source is a political Red Herring to mislead and discredit the source because it was based on political opposition.....and those trying to discredit the search warrant/justice system are making those accusations due to what? Political opposition!