That’s the question editors at Investor’s Business Daily are asking in light of the latest news emanating from the Mueller investigation.

For 18 months, the FBI has been fixated on determining whether President Trump worked with Russia to influence the 2016 election. But explosive text exchanges between top FBI agents suggest it should be looking in the mirror.

The text messages sent between Peter Strzok and Lisa Page, which became public on Wednesday, provide a rare and illuminating window into just how rabidly partisan putatively nonpartisan law enforcement officials can be.

In the exchanges, they called Trump an “idiot,” a “loathsome human,” an “enormous do-che,” and said “this man cannot be president.” …

… On their own, these texts might not be a big deal, even if the two are career government employees. Everyone is entitled to their opinions.

But Strzok and Page weren’t just a couple of bureaucrats crunching numbers in a windowless office at the Bureau of Justice Statistics.

Strzok was a key player in the FBI’s investigation into whether Clinton had broken the law by using a private, unsecured email server to handle highly classified documents. He interviewed several of the people involved, including Clinton herself.

He was also the person who watered down the language in the statement used by Comey to exonerate Clinton, changing it from “gross negligence” to “extremely careless,” which as we noted in this space was critical to Comey’s claim that Clinton didn’t break any laws.

Remember, too, that when Strzok was busy airbrushing Clinton’s email crimes, he would have known that, had the FBI done the right thing and indicted her for putting national security at risk, it would have crushed her campaign, and helped elect the man Strzok clearly felt should never be president.

In other words, Strzok had motive, means and opportunity to sabotage that investigation.