Trey Gowdy is a South Carolina Republican U.S. House member who’s planning to leave Congress at the end of the year.

He’s not done asking relevant questions. Gowdy has one for the White House.

How did Rob Porter, the former White House staff secretary who quit after allegations of spousal abuse surfaced, operate without the proper security clearance for as long as he did?

Gowdy has posed the question to White House chief of staff John Kelly, who’s supposed to keep track of such things. Porter worked with an “interim” clearance, even though he had been accused by two former wives of beating them up.

I’ve always thought that such a rap would disqualify someone from gaining access to the kind of documents that Porter was allowed to handle. Rep. Gowdy wants to know how this happened in a White House that is supposed to run — in the words of the president — like a “fine-tuned machine.”

FBI Director Christopher Wray also has testified that the FBI knew long ago about Porter’s alleged domestic trouble, which has shot holes in Kelly’s assertion that the White House was blindsided by the allegations.

I believe Gen. Kelly has some explaining to do.