Consumer Reports writes about FDA limits on mercury in seafood but applies an EPA consumption metric in order to suggest consumers should eat less canned tuna. It is an old trick that exposes Consumer Reports willingness to use rhetorical sleight of hand in order to get the predetermined results it wants. It is actually FDA that regulates mercury in commercial seafood. None of the canned tuna Consumer Reports tested exceeded the FDA's allowable limit. In fact, the Consumer Reports study found average mercury levels in light tuna were lower than the average found by the FDA