sentences:  In response, the Davis Cup committee made a greater commitment to keep politics out of the competition and disqualified the Soviet Union, which had refused to play against Chile in the 1976 Inter-Zonal semifinals and had already been barred from competing in the Federation Cup for refusing to play against South Africa and Rhodesia, from the tournament.Proposals were also brought forward to bring in an automatic one-year ban for any nation which pulled out of the tournament after the draw had been made, in an effort to prevent teams from defaulting on political grounds.The United States, Great Britain and France all eventually returned and competed in the 1977 tournament.