Vajpayee said the Prime Minister needed to satisfy Parliament as he had himself given certain specific assurances to it and some controversy had been created by some provisions of the legislation (Henry Hyde Act) passed by the US Congress.
The BJP leader issued the statement just three days ahead of the next round of talks between India and the US on the 123 Agreement during which the two sides are expecting to give a final push to the year-long negotiations.
Significantly, the talks between foreign secretary Shivshankar Menon and the US under secretary of state, Nicholas Burns will take place a week before a meeting between Singh and President George W Bush in Germany on the sidelines of the G-8 Summit.
According to media reports, the Indo-US nuclear deal is almost ready for approval of the governments of the two countries," Vajpayee said in the statement.
Vajpayee said a senior US official has claimed that the deal is 90% ready, apparently referring to Burns, who made the remark last week in Washington.