Comey, of course, will be under oath and face perjury if he lies.
What a gutless chicken.
If Trump was in any way a man -- and he's not, he's still just a spoiled little punk hiding behind his wealth and power he got by cheating -- he'd submit all his tweets under oath.
Or even better, why not offer to testify alongside Comey?
It might take a day or two to arrange, but why not?
It won't happen because Trump is a craven coward.