Durbin has been a big critic of the H-1B visas, which were intended to fill labor gaps in highly specialized areas that couldn't be filled by Americans. Instead, Durbin argues, the guest worker program has been exploited by U.S. companies to save labor costs. Media have recently reported on a number of companies, including Disney, Hertz and Toys R Us, that have fired American workers and replaced them with immigrants from an outsourcing company.