The answers to that in terms of detailed policy positions requires more space than what is allowable to type. But in simple terms, unemployment is reduced by capital investment in new ventures and expanding existing ventures. Capital can only be created privately. And as the old saying in the world of economics goes..
Capital goes where it is most welcome. And capital stays where is is treated best.
The US at the Federal level, and in many states has become hostile to business. Between our tax laws and the ridiculous level of complexity associated with them, and the overbearing regulatory environment we must operate in, I can't imagine why anyone would want to hire someone these days.
Corporations today are sitting on a record two trillion in cash, which pays them ZERO at current interest rates. That means when adjusting for inflation, they are guaranteed to lose money on their cash holdings. But the slow loss on cash is more attractive than investing in new ventures in the hostile business climate that currently exists, which only poses greater risk with a nominal potential for reward. So instead, they will hire only when absolutely required to. And existing employees will be forced to do more work for very little if any in additional compensation.
The fundamental problem is that people in DC think that they create jobs. In fact nothing could be further from the truth. Politicians don't create jobs. They can only get out of the way. The reality is that the vast majority of job creation comes from small business owners. I have never yet met a small business owner who said "Thank God for the politicians...I couldn't have done it without them" For the most part, the political figures in DC are obstacles to efficient distribution of capital. The more they get involved, the more they will get in the way, and the less productive job creation will be.