"Research by Daniel Costa, of the left-leaning Economic Policy Institute, and Howard University political science professor Ron Hira, found that 60% of H-1B workers receive lower-than-average wages for their job and region. Google, Facebook and Apple “take advantage of program rules in order to legally pay many of their H-1B workers below the local median wage for the jobs they fill,” Costa and Hira said in an Economic Policy Institute paper."
(from the article above)