1) India has a prime minister which is like the president but is actually the head      of the legislative branch, while the U.S. Constitution has a president, who is        the head of the government, and only works in the executive branch.
2) Under the Indian Constitution, the head of state is the president while the             actual head of the government is the prime minister.
3) The prime minister and his cabinet hold the real power, while the president         has more power in the name.