Of Trump Roadblock.
The White House could try to assert executive privilege to bar Comey from disclosing conversations with Trump or his aides, including one in which Trump reportedly asked Comey to drop an investigation into former White House National Security Adviser Michael Flynns dealings with Russia and Turkey. Trump has denied doing so.
They do that and it would be the beginning of the end. People would want to know why they are trying to suppress the testimony.
I am stocking up on popcorn and paying my cable bill in advance.