he will want it to be public. He craves attention.

Comey wanted. He'll lie more easily under those circumstances.

If I was the person operating the facility, I'd turn the AC from 72 to 74 and make sure 45's chair was vinyl, not leather.

I think he is dumb enough to accept the dare.

Chicken Donnie, Chicken Donnie... If that doesn't get him nothing will.

As long as the Repugs hold a Legislative majority, which includes sole subpoena power.

In fact he just did. Comey volunteered as well.

Room's lie detection system is being tested in preparation for his testimony.....

He'll freak & go on a full blown Twit-storm refusing to go thru with it...

In other words just tell the truth about him. He is cowardly and weak. And calling him that endlessly on CNN will be sooo much fun.

And drive him crazy.

if a bunch of people would get on twitter (since thats what he does) and start some campaign that is "X number of days since Donald Trump said he would go under oath". Similar to what Olbermann used to say "number of days since Pres Bush declared Mission Accomplished". If enough people would tweet it, it might actually get under Trump's skin and cause him to react, since he's so thin skinned.