Congress party has backed the Prime Minister on his decision to appear before Parliamentary Accounts Committee.Talking to the reporters in New Delhi on Monday party spokesperson Shakeel Ahmad said that the Prime Minister has nothing to hide. He alleged the main opposition party is escaping from the debate on corruption cases by creating unwarranted hindrance in the constitutional proceedings. He added that BJP doesn't trust on the abilities of their senior party leader who is heading the PAC probing the corruption cases. However he ruled out any scope of the Joint Parliamentary Probe in the 2G scam.