After Roosevelt won the 1932 presidential election, he appointed Wallace as secretary of agriculture. Despite his past affiliation with the Republican Party, Wallace strongly supported Roosevelt and his New Deal domestic program, and became a registered member of the Democratic Party in 1936. Upon taking office, Wallace appointed Rexford Tugwell, a member of Roosevelt's "Brain Trust" of important advisers, as his deputy secretary. Though Roosevelt was initially focused primarily on addressing the banking crisis, Wallace and Tugwell convinced him of the necessity of quickly passing major agricultural reforms. Roosevelt, Wallace, and House Agriculture Committee Chairman John Marvin Jones rallied congressional support around the Agricultural Adjustment Act, which established the Agricultural Adjustment Administration (AAA). The AAA's aim was to raise prices for commodities through artificial scarcity by using a system of "domestic allotments" that set the total output of agricultural products. It paid land owners subsidies to leave some of their land idle. Farm income increased significantly in the first three years of the New Deal, as prices for commodities rose. After the Agricultural Adjustment Act passed, Agriculture became the federal government's largest department.