Talking to reporters outside parliament, SP leader Mohan Singh also alleged that the government was using the Central Bureau of Investigation (CBI) to force other parties to fall in line.
"Whenever the bill comes, we will vote against it. We may be alone inside the house, but we have a lot of people behind us outside parliament," he said.
"We have already admitted there is pressure of CBI," he said.
Taking a dig at Congress, he said: "All corrupt leaders are there in popular regional parties, so they will use it against Lalu Prasad (Rashtriya Janata Dal), Mulayam Singh (SP chief), Karunanidhi's family (DMK).
"There are no corrupt people in Congress. There was such a huge scam in the Commonwealth Games but nothing happened even after the prime minister's assurance".
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