Sri Lanka’s proposed ban on genetically engineered foods has been delayed again, this time indefinitely. The ban would require 21 categories of food imports to be completely free of biotech products. Citing a need to study the health risks of genetically engineered foods, Sri Lanka had planned for the ban to go into effect in May. That deadline was extended to September at the request of the World Trade Organization — after the U.S. said there was no “credible scientific evidence” to justify the ban. Now, Sri Lanka’s Health Ministry has ordered that the ban not go into force until further notice.