That's a bit naive. What do you think trade policy like NAFTA and TPP are all about?
I'm naive? At least I'm not clueless.
The president can't "mandate" anything to a company about where their jobs go.
Business goes where cheap labor, that can maximize profits, is. Corporations were chomping at the bit to send jobs to China and Mexico, and Congress was more than happy to comply with their owner's wishes.
Apple's got Billions, safely tucked away in their piggy-bank, if any company could afford to bring jobs back to the US, they could (Sure, MacPros are assembled in Texas, a huge boost for America, and Apple's bottom line [Not]). Let me know when that happens.
Now with TPP, they're desperately trying to gain some leverage over the leviathan they created, by aligning everybody on the Pacific Rim, but China. If it passes we'll see how that goes, but as a general rule, US trade deals always seem to benefit the few at the expense of the many.
The concept that Trump, as president, could entice any corporation to bring jobs back from whatever they went, to a high-wage, high benefit (okay, it's relative) America, is laughable. Especially when he's never sacrificed a nickel of profit, regardless of who it hurt (Just ask Atlantic City, what a great benefactor he was). He'd have a hard time keeping a straight face, asking other businessmen to sacrifice for the common good.
Oh, and it's NTR now, not MFN, it really just means, "Can we please treat your citizens as a disposable resource, in order to make obscene profits, that we can, in turn, shelter from taxes in some offshore haven.