Before revision: As analytical chemistry became more powerful and able to detect smaller and quantities of chemicals, and as chemicals became more widely used, regulatory agencies had an increasingly difficult time administering the Delaney Clause as it "recognizes no distinctions based on carcinogenic potency and, at least in theory, it applies equally to additives used in large amounts and to those present at barely detectable levels.
After revision: As analytical chemistry became more powerful able to detect smaller and quantities of chemicals, and as chemicals became more widely used, regulatory agencies had an increasingly difficult time administering the Delaney Clause as it "recognizes no distinctions based on carcinogenic potency and, at least in theory, it applies equally to additives used in large amounts and to those present at barely detectable levels.