If you put your faith before your country , if you see yourself as part of some global x'tian ummah , like the muslims , dont expect to find much sympathy for you from the Indian people.
So I guess by that logic, we should have laws here preventing Americans converting to Hinduism or preventing Hindus from practicing their religion since after all, American Hindus' loyalty to India must come before loyalty to the US. Actually, people can and do all the time have multiple loyalties that coexist, to family, faith, country, etc. Most of the time they are not in conflict. And unfortunately, in this country there is a little thing called the Constitution which guarantees no establishment of religion and prevents the free exercise thereof. Freedom of religion is a fundamental human right. Furthermore, Christians are no Moslems and do not advocate the combination of church and state in an Ummah and never have. And they certainly are not advocating an established Christian church in India. Don't be ridiculous.