If impeachment hearings do occur, it will be because Gingrich and his lieutenants favor them, not because Barr does.
Impeachment hearings will occur because Gingrich favors them.
mnli hypothesis: Impeachment hearings will occur because Gingrich favors them. premise: If impeachment hearings do occur, it will be because Gingrich and his lieutenants favor them, not because Barr does.