More than two-thirds of the Iranian parliament has signed on to a bill that would accelerate Iran’s nuclear program if Congress adopts new sanctions legislation, official news agencies said. The bill would direct Iran’s nuclear agency to enrich uranium to 60%, close to the 90% needed for the material to be used as nuclear bomb fuel. It is currently enriched to a maximum of 20%. The legislation also calls for the start-up of Iran’s partially built Arak heavy-water nuclear reactor.