Seeking to turn the tables on BJP which has demanded home minister P Chidambaram''s resignation in the wake of fresh controversy on 2G issue, Congress on Friday questioned the decisions taken by the erstwhile NDA government despite "serious objections" being raised by its telecom minister.

"For every question the BJP raises, we can raise two. Not with standing serious objections raised by a former telecom minster of NDA, why it is that the migration was permitted, why the spirit of national telecom policy was violated.... Why the entry level for new players would be the same.... Why the spectrum was not auctioned separately," party spokesperson Manish Tewari told reporters.

He was reacting to BJP's allegations against Chidambaram after a letter by finance ministry to the PMO was submitted to the Supreme Court.

Alleging that the BJP wanted to fish in troubled waters, he said they are up to "Mission Trouble" and "seeing and then slaying phantoms where none exist".

Maintaining that the matter is being looked into by the JPC as well as the courts, he said, "It is important not to jump the gun".