Whether Rudy Giuliani experienced yet another psychotic break in imagining that the special counsel's office is adverse to indicting Trump seems irrelevant. More pertinent is that Bob Mueller is a Dudley Do-Right rule-follower who, notwithstanding whatever Rudy has to say, will be immensely inclined to demur.
Most legal scholars interpret the special counsel's mandate, under 1999 rules, as one of excluding indictment of a sitting president. As noted, Mueller is no boat-rocker. Hence Trump's future will almost certainly be decided by the next Congress, which must rely on the special counsel's report. This, in turn, means the next Congress' future will largely be decided by how candidates play the impeachment card.
There's no doubt as to how Republican candidates will proceed. They'll misrepresent how Democrats intend to proceed. Because that's what Republicans do. Because they have nothing else to run on. Not many suspected that a party in total control of both congressional chambers and the White House would succeed in passing only one piece of major legislation — and even there, they've gone mum. It was that bad. So instead they'll imitate what the president has been up to.
Notes the NY Times: "Trump … has rallied his base by repeatedly denouncing the investigation, and strategists in his camp believe they can mobilize voters on the right by warning that a Democratic-controlled Congress would seek, in effect, to invalidate Mr. Trump’s election." The base's Trumpeteering dittoheads have already picked up on the strategy; one hears it in focus groups — those wicked Dems are out to overturn a legitimate presidential election.
Continues the Times, rather quizzically: "But that political strategy could prove difficult to sustain if Mr. Mueller furnishes extensive evidence of wrongdoing by Mr. Trump or his associates." Since when has "extensive evidence" of anything the base wishes not to believe proven effective in illuminating Trump's base? They'll simply parrot the administration's fallback strategy: that the investigation was corrupt to the core, thus its fruit is rotten.
As for the other side: "Already, several dozen Democrats voted earlier this year to advance an impeachment resolution against Mr. Trump, and public opinion polls show the idea of toppling the president is hugely popular with Democratic voters. Holding back an avalanche of impeachment calls could prove difficult for the party in the event of a damning report."
The timing of that "event" remains unknown. Still, the larger question looms, assuming the inevitable "damning report" isn't issued till post-election. If Democrats take control of the House, should they follow through with impeachment proceedings?
I can't imagine any more calamitous course. While it's true that nothing could be more pleasing than Trump's official condemnation, it's just as true that his impeachment would go nowhere in the Senate, whether or not Dems (barely) control it in 2019. So a Democratic impeachment victory would be a Pyrrhic one at best.
What's worse, it could boomerang in 2020. Trump & Associates would of course take Democrats' failure to convict as evidence of Democrats' malice — nothing more. And as easily bamboozled as so many voters are, a critical margin might well believe it. Poor Donald.
In short, impeachment's practical use would come only in the case of a Democratic supermajority in the Senate, which won't happen in 2018, but could in 2020. Even then, a few Republican votes to convict would be indispensable, just to ward off charges of a purely partisan hit job. That most wretched of downsides, however, would be that Trump would have to be reelected for a supermajority to take him out. And in that forbidding case, America's rot would probably be irreparable.