According to the U.S. Dept. of Labor, Tech Companies file for most Green Cards. Amazon leads with more than 1,500 Green Card applications, followed by Cognizant with 1,300. Cisco and TCS follow on the third and fourth spot respectively. Only two Indian companies – TCS and Infosys – made it to the top list. While TCS is placed 4th, Infosys is 7th.