The biggest users of the H-1B visas — the visas needed to import skilled workers — tend to be global outsourcing firms. Here are the top 10 H-1B firms in 2013 and the number of new H-1B visas they received:

Tata Consultancy Services Ltd.6,184
Infosys Technologies Ltd.6,157
Cognizant Tech Solutions U.S. Corp.5,192
Accenture LLP3,321
Wipro Ltd.2,638
HCL America Inc.1,732
IBM India Private Ltd.1,363
Larsen & Toubro Infotech Ltd.1,163
Satyam Computer Services Ltd.1,072
Microsoft Corp.1,039

Source: U.S. Citizenship and Immigration Services