The U.S. lags other countries such as the U.K. and Canada in granting visas to skilled workers
President Barack Obama says the U.S. needs to overhaul its immigration policy to attract skilled workers who can boost the country's economic competitiveness. The U.S. already educates many of the world's best and brightest. The goal, say some immigration experts, should be to retain and attract more foreign talent. Canada and the U.K. already do better on that count.