What are the legal and technical differences between a non-resident-Indian -LRB- NRI -RRB- and a person of Indian origin -LRB- PIO -RRB- and an Overseas Citizen of India -LRB- OCI -RRB- ?
Why does the Indian government charge an PIO -LRB- Person of Indian Origin -RRB- Card holder Rs 1000 but only Rs 500 from a Pakistani for entering Taj Mahal ?