The conservative Wall Street Journal editorial board took former President Donald Trump to the shed on Thursday evening, pointing out that he has no leg to stand on with fiscal responsibility. The board used the recent GOP debate as a means to raise the subject to readers. “The more potent attacks during the debate were on his record as President. Ms. Haley gamely noted that he added $9 trillion to the national debt in four years, ‘and we’re all paying the price of that.’ Mr. Trump spent like a Democrat on domestic programs, and there’s little reason to think he would show spending restraint d…