1. The phrase which Theodore Roosevelt coined is "bully pulpit", which meant being in a public, prominent position (such as the Presidency) that gave people an opportunity to speak out and be listened to. The phrase "Bully Bully" dates from the 1800s and meant "good job", or agreement with the speaker.
2. A Grand Jury has been impanelled on the Russian probe. This DOES mean that a CRIMINAL, not counterintelligence probe is going on. It is VERY LIKELY that evidence of a crime(s) has been found, and subpoenas will be issued. The process continues. It has NOTHING to do with civil political discourse/disagreements in the House or Senate, or civil disagreements on this message board!
If Trump is removed from office, it will be for something major; if his Tweets were impeachable offenses, he'd already be history, and President Pence would be the object of discussion.