According to the US media reports, the Labour Department has opened an investigation against Tata Consultancy Services and Infosys for "possible violations of rules for visas for foreign technology workers NEW DELHI: With the US probing TCS and Infosys for alleged visa rule violations, Communications and IT minister Ravi Shankar Prasad on Sunday said the government will intervene if the need arises. "I am sure these two companies will be able to address this issue properly, they are very reputed companies and the government fully appreciates the good work they have done over the years.