GOP presidential debate moderator Kim Strassel asked businessman Donald Trump on Saturday night to account for his entitlement program proposals which, coupled with his other avowed financial policy plans, would lead to large deficits and the need for an almost impossible level of annual gross domestic product growth.

Trump has, in vague terms, vowed to “save Social Security,” but like many other promises he’s made, he’s failed to elucidate how he would do it. And on his first attempt to answer, he did a lot of hedging, suggesting the problem would be solved by “bringing jobs back” from China, Mexico, Japan and Vietnam — as well as reclaiming tax money that is currently sheltered offshore.