New Republic's Matt Ford contemplates the counter-factual:
Trump might also have had a better first year of his presidency. He wouldn’t be tweeting every morning about witch hunts and collusion, at least (though he’d still be tweeting). And while his poll numbers might have stayed the same, the Russia investigation might not have become the lightning rod that’s energized Democrats and demoralized Republicans. Yes, the 2018 midterms were always going to be tough for the GOP. But they would’ve been easier without the threat of more indictments from Mueller between now and Election Day.
What about legal danger? Without Comey’s removal, Trump wouldn’t be facing obstruction-of-justice questions and the risk of impeachment. The Russia investigation would have continued in a less intense form. The president’s family members might have avoided intense scrutiny from Mueller’s team. Cohen, who knows more about Trump’s legal and business dealings than almost anyone, maybe wouldn’t be facing for an imminent federal indictment. That might have spared him (and maybe the president) from questions about money laundering that are slowly starting to surface.
Experts and analysts spent the last year wondering how to contain the damage that Comey’s firing has done to the justice system. But perhaps the most effective safeguard is the example Trump has set for his successors. If civic virtue, political norms, or personal integrity don’t compel future presidents to uphold the rule of law, then maybe a simpler reason will suffice: It’s too costly not to.
Of course, if enough Republicans care more about personal enrichment than the rule of law—perish the thought!—then Trump and his cronies may not suffer any consequences for destroying it.