BENGALURU: Karnataka Chief Minister Siddaramaiah has pushed the state's demand to make it the medium of instruction for primary education. Speaking at the 61st Karnataka Rajyatosav celebration event, he said, "I have written two letters to the Prime Minister. I have also written to all Chief Ministers because the Supreme Court's order is causing a threat to all regional languages. We have to bring an amendment to the Constitution. It has to get declared in Parliament that regional languages are supreme in states. Amendments should be brought to make changes to the Supreme Court order. So the Prime Minister has to call a meeting of Chief Ministers of all states and decide." He said that the mother tongue should be the medium of instruction in primary schools, adding that it would help in development of regional languages and mental development of children.