Sumanthiran notes that these ministers did not oppose when the proposal for a new constitution was made early last year and even supported its unanimous passage in parliament.
Speaking to BBC Sandeshaya, the MP has responded to the latest stand by SLFP ministers that what was required was not a new constitution, but a constitutional amendment only.
It is wrong for them to change their stand for political gain, he said.
Sumanthiran disagreed with the SLFP’s proposal to fully implement the 13th amendment as the political solution to the north east issue.
Promise for power devolution
Even ex-president Mahinda Rajapaksa agreed for a devolution of powers by going beyond the 13th amendment, he noted, adding the TNA wanted to see the government fulfilled its promise to the Tamils and the international community to devolve powers meaningfully.
If the SLFP agrees with the 13th amendment, that amendment itself calls for a merger of the two provinces, he said.
When asked about the TNA’s stand on the executive presidency, Sumanthiran said the party had supported Maithripala Sirisena at the presidential election on the basis of that promise.