KUWAIT - Kuwait's ruler has blocked a proposal by 31 of the 50 elected members of parliament to amend the constitution to make all legislation in the Gulf Arab state comply with Islamic law, an MP said on Thursday.The approval of Kuwait's emir, Sheikh Sabah al-Ahmad al-Saba, is needed for any constitutional change."His highness the emir is not in favor," said Mohammad al-Dallal, an Islamist MP and legal expert. The proposal was put forward by the Islamic Justice Bloc and signed by 31 lawmakers, he said.Political parties are banned in Kuwait so MPs have to rely on forming blocs in parliament. The 15-member cabinet selected by the prime minister can also vote in parliament."We must think again about convincing the emir or submitting it again in another format," Dallal said."Our society is a conservative society, a lot of people request that laws comply with sharia (Islamic law). We also do not have a stable political system," he said, adding such an amendment could help make lawmaking less chaotic.