Grassley is not a member of the Gang of 8. His information was second-hand until it was confirmed to his Judiciary Committee. Grassley does not leak and does not pretend speculation is fact.
In fact he (Grassley) asked Comey to make a statement to the public declaring Presifent Trump was NOT under investigation. Grassley was looking for transparency. Transparency from Comey and government officials.
not good to be guessing about facts right now.