and a judge was unlikely to grant a Trump administration request to block his testimony.

that rump just doesn't think that way -- he's a "winner," superior to all, who doubles down and rages when "disrespected."

Someone, somewhere got it through the president's head that between his incessant tweeting on the subject and the fact that Comey was fired, there is nothing he can do to stop Comey's appearance before the committee.

Which doesn't mean that Trump won't be complaining about it all later, when it doesn't turn out all beer and skittles for him.

he can't block it.

Trump does not think this way. Trump cannot think this way.

he must get a little that the world hates him and he has absolutely no idea WTF he's doing. I would think he must be miserable.

He cannot divulge classified information. But beyond that he can say whatever he wants. He doesn't work for the President or Federal government any longer.

that he won't try something dirty like suddenly classifying whatever Comey might say after the fact so that Comey is in trouble and/or just to generally fuck shit up.

Losing is not winning.

I'm shocked anyone takes that "leak" seriously.

He knew he'd lose in court if he tried to block Comey. They're on to discredit him, and whatever they call it , they still are churning out the propaganda. He's meeting w leadership to coordinate messages before hand. He just doesn't want to make it look planned.

He is too narcissistic to ever resign.

block Comey... Any executive privilege argument was so weak, given his incessant contradictory twitters, as to be a preordained result--thrown out by the courts.

In that he talked so much about it he can't claim exec privi

at this point. Even if he legally could have done it, which is questionable, even that Buffoon and his advisers knew blocking him in any manner wouldn't have worked.

to date does not have a patriot among them to impeach, so I see no downside.

Yes, he's THAT delusional.

He will make it worse but he doesn't think rationally. If anything, he will fire Mueller if that gets too close to his bubble to burst it. He CAN fire Mueller and I wouldn't put it past him.

he decided he would simultaneously tweet and win the day. Cannot imagine this did not come until after much screaming and yelling on his part and probably trashing whoever was giving him legal advice.

He's stupid and has a bit of dementia. He probably does not understand the implications and/or he thinks he can win. After all, he can shoot someone in the street and still be POTUS. More likely his advisors are looking for an "out" and fine with Comey giving testimony. LOL

He'll also deploy his flying monkeys in the Senate to attempt to confuse the issues and smear Comey.

He's a complete and total narcissist, and other people aren't fully real to him. He honestly thinks he's a great President, the best! and that his Inaugural crowds were vastly larger than that loser Obama's and that global warming isn't real, or at least has nothing to do with humans, and that all those pesky regulations are driving too many good businesses out of business.

He is thoroughly convinced that anything at all that doesn't match his version of reality is fake or a lie of some kind. He honestly believes that most Americans support him and the ones that don't are just losers who don't matter anyway. He hasn't a clue that almost everything he's done and wants to do while in office will wreck people's lives. Plus, he views everything as a business deal and a negotiating tactic. It was pretty obvious to begin with, but he made that crystal clear by saying he'll pull out of the Paris Accords and renegotiate. Wrong. It's not up for renegotiation, but he doesn't realize that.

If he does leave office other than on a January 20th, he will be promptly trying to sue everyone he thinks responsible. Oh, and if by some vast horror he is re-elected in 2020, prepare to see him try to overturn the 22nd Amendment, possibly by Executive Order. Failing that, he'll try to somehow simply install one of his sons in the Oval Office. Again, he knows nothing at all about the Constitution or how our system actually works because he thinks government is just another kind of business.

broke privilege by tweeting about it and talking to Lester Holt.

One cannot refuse the horse it's freedom when one opens the barn door oneself.

and because even Reince Priebus could figure out that trying to block it would be politically disastrous. Their strategy instead will be to try to discredit Comey with tweets and large helpings of word salad.

Maybe an undisclosed settlement was offered to Comey. Could come in handy in his sudden retirement.