Obama used the words \"magic wand\" on the campaign trail in June 2016 while criticizing Trump's claims that he would boost American manufacturing jobs by getting American companies to produce more goods in the U.S.

“He just says, 'Well, I’m going to negotiate a better deal.' Well, what, how exactly are you going to negotiate that? What magic wand do you have? And, usually, the answer is he doesn’t have an answer,” Obama said then.

Obama did not mention the GDP.

ABC News' Alexander Mallin contributed to this report.

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