Singapore on Saturday sought to defend its visa regime, saying that one-third of its workforce is ‘already foreign’ and it would be ‘mindless’ to have open border without any policy framework to control the flow of people. The statement of Singapore Deputy Prime Minister T Shanmugaratnam assumes significance as Indian IT companies use that country as a gateway to serve clients in the region. All major Indian tech companies including TCS, HCl, Infosys and Wipro have a presence in Singapore.