The 416-6 vote revives the government's terrorism risk insurance program. The program provides a backstop in which the government steps in to cover the bulk of losses in the event of a major terrorist attack.
The legislation passed the House last month after extensive delays but became snagged in the Senate in Congress' final days.
The legislation would decrease the government's exposure by gradually increasing the "trigger" at which the program starts to cover terrorist attacks to $200 million in losses, up from $100 million previously. The government's share of catastrophic losses would be gradually lowered from 85 per cent to 80 per cent.