For many years then, conservation groups have regarded Pelly as the strongest weapon for forcing countries to conform with international conservation agreements, in spite of the fact that the amendment had never actually been used to sanction a country that violated such agreements.
雖然過去美國從未據此真正對違反國際保育協定國家做出制裁，但長期來，培利卻被保育團體視為迫使各國執行保育協定的最有力武器。