It's All For Show
We all know he said he'd release his tax returns - he said that at least twice, under two different circumstances, and with two different caveats.
We all know he said there was evidence of Obama tapping his phones in Trump Tower, and that he'd have it for us inside a week - which was 3 or 4 months ago.
We all know there's any number of other instances when he "promised" something that never materialized.
Every time out, we get a new look at 45* doing nothing but trying to set up the cliffhanger for this week's episode of Your Life Is A Rolling Clusterfuck In A Dumpster Filled With Burning Tires And You Pay Me For All Of It.
If anybody calls this asshole's bluff on this one, we all hafta know by now that some imaginary lawyer will suddenly appear in 45*'s dreams and forbid him to testify - even though he really really really wants to do it - for reasons beyond the understanding of you mass of unwashed idiots.