90% of individual voters have virtually no influence over tax and trade policies written by corporate lobbyists and implemented by elected politicians working at the behest of the "investor class" which is the richest ten percent of citizens. When workers toiling at two or three jobs every week working in excess of 70-80 hours no longer have the disposable income to qualify as middle class, the problem lies with government and those it serves.
It has nothing to do with policies. How many people do you know that are working 80 hours a week and don't have disposable income? I don't know anybody like that and never have. Anybody working those kinds of hours either has no home life and all they have to do with their time is work, or they made a lot of really stupid choices in their life.
If you have to work that many hours, then the problem is you didn't take up a trade, get an education, or pursue a line of work that pays much better. The government doesn't do that for us. We do that for ourselves like the tens of millions of Americans that already do these things.
I made a moderate middle-class living during my life. I did some shit jobs, and when I decided the money was insufficient, I got into a career that paid better. Instead of driving around in new cars, taking expensive vacations every year, later on the newest smart phone, the premium cable plan, I invested my money in real estate. I had no children mostly because I didn't want the expense. I haven't taken a vacation in over 30 years, and hell, at the age of 60, I've never seen an ocean in my life outside of television or an airplane window.
I don't credit my middle-class life to government, I credit myself for making a lot of sacrifices, working hard, investments, and making the right choices at the right time. Government didn't do any of that for me, and there are few people who can't do what I did.