Complex sentence: The chief force for the Democratic Administration was Robert Greenstein, Administrator of FNS; in Congress, major players were Senators George McGovern, Jacob Javits, Humphrey, and Dole and Congressmen Foley and Richmond.
Split into simpler sentences: The chief force for the Democratic Administration was Robert Greenstein, Administrator of FNS. In Congress, major players were Senators George McGovern, Jacob Javits, Humphrey, and Dole and Congressmen Foley and Richmond.