Under federal court Rule 11, an attorney’s signature on a federal court filing broadly vouches for the factual accuracy and lack of improper purpose in that filing. In concept at least, Rosenstein can be disciplined by the FISA court for a Rule 11 violation, assuming that a party with sufficient interest lodges a motion for sanctions. I am at a loss to explain precisely why the attorneys for President Trump, Carter Page, or other improper targets of the FISA process do not make such a filing.
The FISA judges must have been in on it. Otherwise, they would be referring the fraud against the court to DOJ for prosecution.