Pune: Terming the Citizenship (Amendment) Act a "malicious and mischievous" law, senior Congress leader P Chidambaram said on Friday that people across the world are questioning India's commitment towards being a democratic nation.

He also described the National Population Register (NPR) and National Register of Citizens (NRC) as "mischievous and dangerous".

"We are opposing the Act on the basis of constitutional morality and constitutional legality. Right now, the ball is in the Supreme Court and we are confident that it will strike down (the law) and redeem the honour of the people of India," the former Union finance minister said while delivering a lecture on CAA-NPR-NRC and the Union Budget here.

"Worldwide, India's stock has plummeted... All over the world people are questioning India's commitment to be a democratic country. All the goodwill that was built over the last 40 years has been destroyed by this one mischievous and malicious Act and this must go," Chidambaram said.

He also asserted that the Citizenship (Amendment) Act (CAA) was a "reaction to the fiasco that happened in Assam with regards to the NRC".

"After spending Rs 1,400 crore for the NRC exercise, 40 lakh people were labelled stateless -- not once but twice. Revised exercise rendered 19 lakh people stateless.

"When the people of Assam rejected it, the (Narendra) Modi government suddenly thought that something should be done and they brought this CAA," Chidambaram said.

The former Union minister said a "propaganda is being spread" that the Congress is opposing citizenship given to the persecuted Hindus from Pakistan, Afghanistan and Bangladesh.

"We are just asking if persecuted Hindu minorities from these three countries are allowed, why not Tamils and Hindus from Sri Lanka and Burma and Buddhist from Nepal and Bhutan are allowed," he said and also sought to know why Muslims were excluded from the ambit of the law.

"According to the United States Committee for Refugees and Immigrants, the most persecuted community in the world is Rohingya in Myanmar," Chidambaram said.

He said the Congress is not against giving citizenship to persecuted refugees.

"We are not against those who are included in the Act. We have a problem with who has been excluded... Include the muslims also, include all the persecuted communities. But it clearly shows the bias that the Modi government has against the Muslims... They have framed this Act to keep the Muslims out," he said.