At a press conference here last night, Sens. William B. Saxbe ( R-Ohio ), and Frank Church (D-Idaho) announced that they would introduce an amendment to the Senate foreign aid bill to cut off all further economic and military assistance to Pakistan "until the distribution of food and other relief measures supervised and operated by international agencies takes place on a regular basis throughout East Pakistan and the majority of refugees in India are repatriated to East Pakistan." They said that the amendment-which would not abrogate existing written commitments-would involve some $80 million in economic aid as well as an undetermined amount of military aid.