John Cornyn: “It is impossible for you to prove a negative.”

I would look to the White House if you want to look for who’s responsible for the outcome.

Sen. Schumer, what he cares about is the midterm election and politics. And I don't think he cares about the substance of this," said Sen. John Cornyn, R-Texas.

This is unfortunately shaping up to be a close and I hope not disastrous election.

I think that's incredibly irresponsible.