The US Victims of Trafficking and Violence Protection Act of 2000 categorises countries based upon the concerned governments efforts to combat trafficking: Tier-1 for countries complying fully with the Acts minimum standards, Tier-2 (India is presently in this category) for those that do not show full compliance, while Tier-3 comprises countries that arent complying at all. A down-grading for India will mean Tier-3 and, thus, a US vote against loans to India from international financial institutions. That does not matter much at the moment, since India is no longer dependent on these institutions.
This isnt to say human trafficking can be ignored. According to an estimate, nearly 700,000 persons are trafficked every year across international borders. In India, a number of state governments have set up fast-track courts to prosecute traffickers. Better enforcement of the law is only one part of the answer. The other is to do things like legalising prostitution. This will immediately remove the industry from the clutches of the underworld and the mafia and give women in this profession some rights. And most important, a voice that will be heard, even if not always heeded.