President Asif Ali Zardari will address joint sitting of the parliament on March 16, a private TV reported Monday. The Core Committee of Pakistan Peoples Partly has decided to present before the National Assembly the bill to repeal the 17th Constitutional Amendment, concluding the constitutional reforms prior to Zardaris address, sources said. The PPP committee has also issued instructions to Chairman Constitutional Reforms Committee Raza Rabbani in this regard, the sources add.