If there were nothing to this, why would Trump stonewall Congress to the extent that he has? That’s not how the innocent act.

When witness after witness tells a version of the same story, providing pieces of a puzzle that fit snugly together, you can reach a conclusion about the whole of it. That’s called logic.

And if the actual case against Trump were weak, why would Republicans keep redirecting attention to Democrats’ motivations — to how much they despise the president? That’s called distraction.

McSally practiced it on Thursday when, in a moment of breathtaking hostility, she answered a reasonable question from Manu Raju of CNN about whether any new evidence should be presented during the Senate trial by snarling, “Liberal hack!”

She’s terrified.