Caste system is still widespread in India. Just ask anyone if they are married to the person with the same caste or not? and 95% of time they would say yes. Even if your father left India when he was 3, you still belong to a caste. Its not a system enforced by the government but people themselves. Religion & Government have limited power in India, Society is basically what determines everything in India, and it enforces caste. Caste system is associated with hinduism but even Christians, Muslims and Sikhs in India have a caste. Only people I know who are not following caste system are Affluent Muslims, Jains & Tribals, but they have their own systems.