As reported by The Indian Express:
The proposed changes in the issuing of H-1B visas, the highly sought after US work permits, will badly affect the Indian IT firms which depend heavily on these work visas.
The changes under the Comprehensive Immigration Reform (CIR) put a curb on use of H-1B visa for those companies which have a higher ratio of work force under this category.
Most of the Indian companies will fall under this classification.
For more details click here