The U.S. Congress has also instructed the U.S. EPA to make clear definitions of such green sales terms as "degradable," "biodegradable," "recyclable," and "environmentally friendly."
美國國會因而也呼籲美國環保署，為「可分解的（degradable）」、「可生物分解的（biodegradable）」、「可回收的（recycl-able）」以及「對環境友善（environmentalfriendly）」等經常在綠色行銷中出現的字眼，訂定明確定義。