India, Sept. 20 -- There's no doubt that Non-Resident Indians (NRIs) have been assets to host countries. But now they can be the nation's valued spokespersons, lobbyists and ambassadors and project our face to the world as the UN's International Migrant Stock report has declared the Indian diaspora to be the biggest with a total strength of 17.5 million. Though we have been topping the diaspora chart in recent times, what is commendable is that we have been able to maintain our spot despite stringent visa norms by some nations. This pool represents a little over six per cent of the total global migrant population. The latest report comes ahead of Prime Minister Narendra Modi's "Howdy" event in Houston where he is expected to address a 50,...