Changes in H-1B visa availability instituted beginning in 2004 resulted in a greater concentration of India-born workers in computer-related fields. In response to concerns that foreign workers were taking jobs from Americans, especially in high-technology fields, Congress declined to renew previous temporary increases, which reduced the annual quota on new H-1B visas from 195,000 to 65,000, beginning with fiscal year 2004. A study by Anna Maria Mayda, Francesc Ortega, Giovanni Peri, Kevin Shih,...