Biden has no capacity to ship jobs overseas. Any measure he
could take to try and
prevent jobs being moved overseas would,
necessarily, harm the American economy. Tariffs and such to disincentivize outsourcing really only serve to increase prices for American consumers. "Globalism" is essentially a fact of life, not a political opinion, and it's been that way for decades.
Also, those jobs being shipped overseas largely
aren't middle class. Jobs get shipped overseas because the labor required is
cheap, and they can get it a little bit cheaper in another country.
What you're
really complaining about unchecked capitalism, not Democrats. The shrinking middle class is a developed nation problem, not an American problem;
https://www.cnn.com/2019/04/11/busin...ort/index.html The villain is capitalist economics, which encourages wealth to pool at the top, leading the middle and working classes to stretch their ever-shrinking portion of the pie wider and wider.
You'd have to aim for policies which tax the rich strongly, lighten burdens on the lower and middle classes, and provide greater support for those in need. In other words, what the Democratic platform basically proposes. Even if you want to argue it doesn't go far enough, it's a big step from the status quo Trump has dug the country into, and nobody's argued it's the endpoint target, just the target for the
next four years.