Considering I don't support their mission or their methods, I am no way am defending them. I am objecting to your mischaracterization of who they are. They are not foreign missionaries anyway you cut it. They are locals.
I think India is done with providing the evidence and waiting patiently for America to act. Its time for India to enact the laws and crack down on the missionaries and be done with the nuisance.
Again, this law does nothing to stop the atrocities you are talking about. This law only prohibits freedom of religion and religious expression. If there are groups funneling money to these terrorists, they should be identified and shut off. This has nothing to do with conversion.