Inequality in America: 10 Causes and 10 Cures has some of the answers:
1. International Trade Reform. The persistent trade deficit that drains America of jobs and money has cost us three million jobs. The author proposes new, tougher trade deals with China and Mexico, less outsourcing (especially of government work), a new energy and environmental policy that will put solar panels and solar hot water heaters on rooftops across the nation and impose a carbon tax on Chinese imports to counteract their pollution.
2. Social Security and Income Tax Reform. Social Security taxes are a regressive tax that taxes the poor at a higher rate than the rich. The author proposes no social security tax on the first $25,000 of income, and lifting the cap. Now those earning more than $107,000 pay no additional social security taxes. In addition, the author proposes imposing social security taxes on unearned income such as capital gains.