Sure, politicians can do things like offer corporations tax breaks and other incentives to move to the town, state, or country, but even in that their power seems quite limited. And hearing someone promise to bring back manufacturing jobs is just laughable. We're a service economy now, and we're going to need to get used to that fact. Unless there's a compelling business reason to manufacture in the US, it's not going to happen, and since China and India do have workers (at the very least) as smart and capable and hard-working as ours, those jobs are not coming back.
And it's really annoying to see the Democrats pandering to the Ohio view that NAFTA has killed their economy, when every economic article I've read has said that, at the worst, it has been neutral for the country. It's too bad, but I guess educating people against their long- and deeply-help beliefs is just not going to happen in the middle of a tight primary.
At any rate, I'd really like to know if the politicians' claims about creating jobs can be taken as anything other than insincere pandering.