The thought keeps popping into my noggin: If Donald John Trump is innocent of what is being alleged against him, why is he resisting so fiercely the effort to find out the truth about those allegations?

The president is now under investigation by a special counsel, Robert Mueller, over questions surrounding whether his campaign had any improper contact with Russian government officials. Mueller also is looking at whether Trump asked former FBI Director James Comey to pull the plug on an investigation into former national security adviser Michael Flynn’s relationship with foreign governments.

His reaction? He went quiet for about two days. Then he returned to Twitter to accuse his enemies of conducting a “witch hunt”; he opposed the appointment of a special counsel by the Justice Department; he told Coast Guard Academy graduates that he is the most persecuted politician in history.

He keeps insisting the Russian government didn’t seek to influence the 2016 election, despite what multiple U.S. intelligence agencies have said to the contrary. He also insists that “there was no collusion” between his campaign and Russian hackers.

POTUS keeps blabbing about Russia

I’m just wondering whether someone who’s clean would feel the need to fight back so strongly. Why wouldn’t the president welcome the probe, endorse Mueller’s credentials as a pro, then let the man reach a conclusion that verifies what the president has been saying?

Trump’s overheated reaction just doesn’t sound to me like something that an innocent man would do. Maybe it’s just me. I don’t think I’m alone in wondering about the conduct of a politician who keeps insisting he did nothing wrong.