Watch: The Big Fight - How to Prevent Illegal Immigration?

The debate was started in the run up to Lok Sabha polls by PM Narendra Modi. Addressing a gathering in West Bengal he had issued threats that if BJP comes to power Bangladeshi illegal immigrants will have to pack their bags and leave the country. But is it practically possible to identify illegal immigrants and deport them? Is the issue of illegal immigration a political hot potato? Are illegal immigrants a threat to country's security? Or should India issue work permit for illegal immigrants? We debate on The Big Fight.