Trump will produce it.
In the meantime, Trump has fully controlled the conversation for Sunday morning talk shows just as he did last Sunday.
I also say that the fact that he has delayed 24 hours to substantiate his claims fuels doubters or at least gives rise to competing guesses as we have just seen among us. As Wallace properly pointed out, it is not incumbent on the Democrats to prove their innocence or to prove a negative, it is incumbent on President Trump as the accuser to come forth with evidence. I say he has to make a prima facie case.
There are dots which we can attempt to connect but those are circumstantial background dots, not even proven facts, and do not show per se a high-level conspiracy, even though there has been indisputably illegal activity in leaking.