http://news.investors.com/Article/590383/201111030805/Income-Inequality-Rose-Under-Clinton-Obama.htm There is no correlation between upper tax rate changes and income equality. Want to cut into the 1%? Write your Congressman to end technical advances, free trade, immigration, and women working...United States of Amish.
There is no "can" to it, illegals do push down wages. As for income inequality, that is not really the issue per se, the issue is growth in wages in income outside of the top 5%, meaning if they get wealthier, as long as the rest of the demogrpahics grow, it does not matter. That has not been happening for over a decade. The System is doing exactly what it was designed to do, concentrate wealth.