We are in a Constitutional Crisis right now.
The President is under a criminal obstruction of justice probe for trying to halt the #TrumpRussia investigation.
Congress is harassing the Deputy AG overseeing the investigation.
Trump faces a grand jury subpoena.
There's a 0% chance that charge earns 2/3rds of Senators.
There's a 100% chance it would be a political sham.
Bill Clinton was subpoenaed but chose to negotiate an interview with his lawyer present (which usually isn't allowed in a grand jury). He got impeached.