Congress is back for the lame duck session, and the Representatives- and Senators-elect are in Washington for orientation. Wherever there is a group of politicians, there is a group of people jockeying for position, which in this case means committee assignments, chairmanships and leadership posts.On the House side, both Chairman Frank Lucas (R-Oklahoma) and Ranking Member Collin Peterson (D-Minnesota) are expected to retain their positions on the Agriculture Committee, but the subcommittees are not so stable. Even before the election, Rural Development and Research Subcommittee Chair Tim Johnson (R-Illinois) and Nutrition and Horticulture Subcommittee Chair Jean Schmidt (R-Ohio), plus Conservation Subcommittee Ranking Member Tim Holden (...