Very sorry, Fermion.
As i recall, and i have five cats now and have rescued, rehabilitated, and trained as therapy animals several cats, and a couple dogs, over the past 25 yrs, that every major cat food manufacturer was affected by the powdered melamine scandal. The common source was a company in China that packaged the stuff as cheap protein powder. I was extremely fortunate in that since my cats at the time ate only dry food (some dry products had it too but not nearly as many lines as the wet food lines) none were affected. I do know Petco has pledged to stock only foods with North American sourced ingredients ever since this happened. A yr or so after the pet food scandal, there were some deaths of human babies in China as the stuff got put in baby formula there too. After that, an executive from some co there was executed, and have not seen any more melamine stories since.