In May 1970, Stennis argued against an amendment by Frank Church and John Sherman Cooper that if enacted would prohibit funds for retaining American troops in Cambodia, telling Senate Foreign Relations Committee Chairman J. William Fulbright he did not understand how a president could select a date without assurance there would be no reversals in battle. After Stennis recalled President Nixon's having made an estimate on when the U.S. would exit the conflict, Fulbright said Stennis had confirmed his belief that Nixon did not mean it when he said American involvement in Cambodia would be over by July 1. Stennis then charged Fulbright with putting words in his mouth.