U.S. SENATE GROUP URGES SUBSIDIES FOR USSR A majority of the Senate Agriculture Committee urged President Reagan to reverse his opposition to export subsidies to the Soviet Union as a way to get its negotiators to purchase some 500 mln dlrs in American wheat. The group, led by committee chairman Patrick Leahy, a Vermont Democrat, urged Reagan to step up negotiations with the Soviet Union by providing export subsidies to help U.S. farmers.