Has Immigration Caused the Income Gaps Since 1774?

For example, immigration of Mexicans increased dramatically after 1965.  According to a study by the Pew Research Center, they formed “the largest wave of immigration in history from a single country to the United States.”  More than 52% were illegal immigrants.  “Some 30% of all current U.S. immigrants were born in Mexico.”  Read more: http://www.americanthinker.com/articles/2015/05/has_immigration_caused_the_income_gaps_since_1774.html#ixzz3ZE9qnu36  Follow us: @AmericanThinker on Twitter | AmericanThinker on Facebook