Answer:
President Harry S. Truman
Explanation:
Truman's surprise victory was the fifth consecutive presidential win for the Democratic Party, the longest winning streak for either party since the 1880 election. With simultaneous success in the 1948 congressional elections, the Democrats regained control of both houses of Congress, which they had lost in 1946.
Committees in Congress are tasked with a specific element of American society to study, organize, or provide information on. One of the standing (aka permanent) committees is the Joint Committee on Taxation. This committee consists of members of both the House of Representatives and the Senate. In this committee, members from both parts of Congress meet in order to try to simplify the tax code and investigation the operation/effectiveness of the internal revenue taxes. These individuals work together to accomplish these goals and possibly change a current tax related structure so that it could be simpler.