Calling for a comprehensive immigration reform that gives more opportunities to high-skilled workers from countries like India, New York Mayor Michele Bloomberg has demanded removal of Congressional mandated cap on H-1B visas and Green Cards.

"We must stop telling US companies that they cannot hire the high-skilled workers they need. By making it difficult for them to obtain temporary and permanent visas for high-skilled workers, the federal government is slowing growth and worse, promoting the outsourcing of American jobs," Bloomberg said in his address to the Council on Foreign Relations.

"Make no mistake about it: If companies can't hire the workers they need here, they will move those operations out of the country. You just have to look at Microsoft's recent decision to open a research park in Vancouver," he said.