Hes not going to - and heard Lindsey Graham on the Radio (Hannity) and Graham before he does anything he wants to speak to the sub-source - he said that over two years ago - and has done nothing.
Like Sessions / Huber / Rosenstein / Horowitz/ Graham - the game is pretend youre running a blockbuster Investigation, while you are really running out the clock.
This has the same hallmarks of that Goliath Hillary Investigation, a fake Investigation.
.
IRS - Lois Lerner - they just ran out the clock.
They kept it open, claimed they were going to uncover it all, after 6 years, Sessions walks out and says / nothing there. Nothing to see here, and closed the Investigation.
Imran Awan - another case the Deep State closed their eyes and said: nothing there.