According to the financial statement filed by then Secretary of State Hillary Clinton, Bill Clinton gave a speech in San Antonio, Texas for $150,000 on May 19, 2010. Federal regulations require a disclosure of the “source” of honoraria paid to spouses.

Hillary listed the “source” of the money as Craig Michaels, Inc., an event planner. Apparently to her, the source means the entity that sent the check, not the entity that sponsored and paid for it. But here’s the thing: in Bill’s filing with the ethics watchdogs at the State Department, he indicated that one of the two sub-sponsors of the speech was Georgia Pacific Co.

But Hillary doesn’t want you to know that.

Because guess who owns that company? Koch Industries, owned by the Koch brothers.

Both Bill and Hillary have deplored the political influence and money spent by David and Charles Koch to elect Republicans.

But they don’t mind cashing the Koch checks and depositing them into their own joint bank account.

Ironically, just yesterday, Clinton campaign national press secretary Brian Fallon circulated a talking-points memo to Clinton allies with suggestions about how to attack the Peter Schweizer book Clinton Cash, which has started a tsunami of bad press for Hillary. (Forgive the understatement).

Fallon proposed that Clintonites blame the book on the Koch brothers: Spread the word, he said that: “The book was backed by a Koch Brothers-linked organization.”

Perhaps the 30-something Clinton mouthpiece doesn’t remember that the Koch brothers contributed $3,500 to Hillary’s Senate campaign coffers. She didn’t return that money.

Hillary and Bill have no problem taking speech money from the Koch Brothers — they just want to make sure that Hillary’s opponents don’t do the same.

And they want to make sure the fees to them stay top secret.