Washington: The U.S. has said it would talk to India about not "disadvantaging" American companies eyeing the $100 billion nuclear pie if the U.S. Congress is unable to approve their civil nuclear deal quickly.

"Well, I hope we can get it through Congress," U.S. Secretary of State Condoleezza Rice said Saturday when asked if the delay in approving the India deal did not pose a risk of disadvantaging American companies with the Nuclear Suppliers Group (NSG) also clearing the way for nuclear trade for the French and the Russians.

"But we have talked to the Indian government about this, and I think they recognise and appreciate American leadership on this issue," Rice told reporters on way to Algiers Saturday, according to a State Department transcript.

"And because of that, I think we will have ways to talk to them about not disadvantaging American companies," she said. "But obviously, the best thing would be to get it through the Congress."

Asked how confident she was that future governments in India would abide by the nuclear agreement as the deal was "tied so much" with Prime Minister Manmohan Singh, Rice said: "It has been associated with Prime Minister Singh. But, frankly, I think there is widespread support for this in the business community in India."

"I think there is widespread support for it in the environmental community, even within some of the opposition I think you find support for this," she said, noting, "India has a lot at stake in this agreement."

"And I don't think that the Indians would have sought this agreement if they did not see that their principal goal now, their principal incentive, is to seek peaceful uses of nuclear materials, to be able to build civil nuclear facilities, and to do that with the best technology from around the world," Rice said.

"And so, once it is done - and I do want to emphasise we still have to go back to Congress - I think you will see that there is really a basis for a very different kind of relationship for India with the rest of the world on these issues," she said.

Asked why the administration was pressing for quick passage of the implementing 123 agreement when a similar 123 agreement had been languishing in the US Congress for months, Rice said the two were different as Russia was already a member of the non-proliferation regime.

"I think they're different, for one very important reason," Rice said. As Russia is already a member of the Nuclear Non-proliferation Treaty (NPT) and the NSG, that agreement "will eventually improve the prospects for U.S. cooperation with Russia on nuclear issues, nuclear technology".

"But the India deal is landmark," she said. "It's no secret India has been outside the non-proliferation regime for the entire history of its programme. So, in that sense, it is more significant, from the point of view of the historic nature of the agreement," Rice said.