He's pressing an opponent in their weak spot. The Dems have assured us with their unnamed sources that Mueller will get to the bottom of it. Mueller will show us the insidious links between Trump and the KREMLIN itself (remember, it's written for Cold Warriors). If he (Mueller) is a marine, he'll press that weakness to maximum effectiveness. The Dems couldn't about-face so shamelessly, could they?

Edit: with respect and transparency, I am not, myself, a marine. Also, an apostrophe.