Union finance minister Nirmala Sitharaman, targetted by her critics over the 18 per cent Goods and Services Tax or GST on life and medical insurance premiums, retorted today that leaders having objection should first have consulted their state finance ministers who have a say in the GST Council. Amid growing dissidence over the GST on premiums, the government has repeatedly clarified that it was a decision of the GST Council -- which has only brought more jibes from the Opposition.