Evan McMullin, who ran for president as an independent in 2016, poses an interesting thought via Twitter.

McMullin wrote: Hillary Clinton testified to the House Benghazi Committee in public for 11 hours and @realDonaldTrump won’t even sit with the special counsel for a minute. Now, why is that?

He might have posed his question rhetorically, but I think I can answer it for him.

I believe it’s because Donald Trump doesn’t want to get trapped into lying under oath, which I believe is entirely possible, if not probable.

You should recall that the U.S. House of Representatives impeached President Bill Clinton in 1998 for lying to a grand jury. He took an oath to tell the truth. He didn’t. The House used perjury as the basis for its impeachment.

Special counsel Robert Mueller might want to summon the president to talk about whether his 2016 campaign colluded with Russians who interfered in our election. Trump, in my view, cannot tell the truth. He is not wired for truthfulness.

It’s dangerous for him to talk to a meticulous lawyer, such as Mueller.