The H1-B visa program is under scrutiny yet again and this time it has been triggered by US economist and former Congressman Dave Brat and an Indian-American diplomat, alleging 'industrial-scale fraud' centred on the US consulate in Chennai. Despite a cap of 85,000, the US Consulate in Chennai allegedly issued 2,20,000 H-1B visas last year. NDTV's Dishha Bagchi breaks down the finer details.