The BJP on Sunday hailed Prime Minister Narendra Modi for the decision to bring a unified pension scheme for central government employees and hit out at the Congress, asking why it has not implemented its promise of bringing back the old pension scheme in Himachal Pradesh and other states where it is in power. Addressing a press conference at BJP headquarters here, senior party leader Ravi Shankar Prasad slammed Congress president Mallikarjun Kharge for his U-turn jibe at the Centre and said Prime Minister Modi is "sensitive" to public issues and takes decisions in public interest after careful consideration. The Modi government does not take "ad-hoc decisions", the former Union minister said and asked Kharge to tell the nation why his party has taken a "U-turn" on its poll promise of implementing the old pension scheme in Himachal Pradesh, Karnataka and Telangana after coming to power in these states. "The Congress has made the old pension scheme a massive issue in Indian politics