The BJP and Sena, which fought the October 21 assembly polls in alliance, had secured a comfortable majority by winning 105 and 56 seats, respectively, in the 288-member assembly. The Congress and the NCP, pre-poll allies, won 44 and 54 seats, respectively.
BSP president Mayawati too on Thursday blamed the government for the controversy, saying education and politics of religion or caste cannot be linked.
A key meeting of top Congress and NCP leaders is under way here to discuss contours of the alliance with Shiv Sena for government formation in Maharashtra.
Bittu cited the assassinations of the then prime minister Indira Gandhi and later her son and former prime minister Rajiv Gandhi by terrorists to highlight the threat to Sonia Gandhi, who is Congress president, her MP son Rahul Gandhi and daughter Priyanka Gandhi.
Under the electoral bonds scheme, the government has offered complete anonymity to those making donations. A donor could now anonymously buy a bond, and deposit it with the political party of his or her choice.
In a separate meeting, the Congress Working Committee (CWC) reviewed the political scenario in Maharashtra, a day after it held a marathon meeting with the Nationalist Congress Party on forming an alliance together with Shiv Sena to form a government in the state.
Indian-origin US Senator Kamala Harris and Hindu Congresswoman Tulsi Gabbard engaged in a war of words during the Democratic primary presidential debate.
Leader of the Congress in the Lok Sabha Adhir Ranjan Chowdhury said, "On behalf of our party, we will strive to raise this issue in Parliament and ask the government to come clean on this."