The No.18 question on the referendum has to do with attempts to impose restrictions on the import of ractopamine-containing pork. Critics argue ractopamine is an additive illegal in 160 countries due to food safety concerns and that its import could damage local producers.[14][2] The opposition of the issue worries that the ban on the imports of ractopamine porks could potentially damage the international relationships and trade agreements of Taiwan, specifically the application of joning CPTPP as well as Taiwan–United States relationship.[15][16]