Schiff says he's conducting interviews in secret so they don't "give the president or his legal minions the opportunity to tailor their testimony and in some cases fabricate testimony to suit their interests" bloomberg.com/news/articles/…
Schiff also said they don't need testimony from the whistle-blower to find out what happened and are focused on protecting the whistle-blower.
He also said he should have been more clear about contacts between the whistle-blower and his committee.
Context on a previous impeachment inquiry:
Schiff said he may eventually call all of the witnesses to give public testimony; says right now is the "grand jury" stage.
