The walls are closing in.

Following the nakedly political firing of FBI Deputy Director Andrew McCabe, Trump appears set on spending the weekend making himself look as guilty of obstruction as possible.

After months of hounding by Trump, the Justice Department axed McCabe just hours before he was to retire with a full pension. That act alone has set off political fireworks. And Trump has been on a mission to keep feeding the flames with incendiary tweets.

Trump’s personal lawyer explicitly created a link between the firing of McCabe and the Russia investigation in an interview following McCabe’s ouster.

On Saturday, Trump tweeted that “The Mueller probe should never have been started.” And he repeated the thoroughly debunked lie that “there was no collusion.”

Then on Sunday morning, he attacked former FBI Director James Comey, McCabe, and Mueller in a rapid flurry of similarly dishonest tweets.

“Wow, watch Comey lie under oath to Senator G when asked ‘have you ever been an anonymous source…or known someone else to be an anonymous source…?'” Trump wrote. “He said strongly ‘never, no.’ He lied as shown clearly on @foxandfriends.”

In the clip to which Trump refers, “Fox & Friends” asserts that McCabe’s written statement contradicts Comey. But that’s not true. The statement says McCabe acted under his own authority, and that Comey was merely aware of his actions.

“Why does the Mueller team have 13 hardened Democrats, some big Crooked Hillary supporters, and Zero Republicans?” said another tweet. “Another Dem recently added…does anyone think this is fair? And yet, there is NO COLLUSION!”

This is also a lie: Mueller himself is a lifelong Republican, and the voting records of his team are unknown.

Finally, Trump attacked the evidence he knows is coming against him.

“Spent very little time with Andrew McCabe, but he never took notes when he was with me,” Trump said. “I don’t believe he made memos except to help his own agenda, probably at a later date. Same with lying James Comey. Can we call them Fake Memos?”

Trump is attempting to undermine contemporaneous memos written by a director and deputy director of the FBI, which carry great evidentiary weight in court.

Coming as it does on the heels of McCabe’s firing, Trump’s rant is clear evidence of that firing’s corrupt purpose. And it’s an act of obstruction all its own.