The Senate has voted to rescind a 30-year ban on nuclear trade with India.
The vote gives President Bush a rare foreign policy victory in his final months in office.
The treaty marks a major change in U.S. policy toward a nuclear-armed India after decades of uneasiness from washington.
Bush administration officials have long maintained that India has a responsible nuclear program.
They say there are many opportunities for U.S. companies to do business in India's multi-billion dollar nuclear marketplace.