Article 1, Section 7, Clause 1

Document 11

House of Representatives, Duties

Mr. White. The Constitution, having authorized the House of Representatives alone to originate money bills, places an important trust in our hands, which, as their protectors, we ought not to part with. I do not mean to imply that the Senate are less to be trusted than this house; but the Constitution, no doubt for wise purposes, has given the immediate representatives of the people a control over the whole government in this particular, which, for their interest, they ought not to let out of their hands.

Mr. Madison. The Constitution places the power in the House of originating money bills. The principal reason why the Constitution had made this distinction was, because they were chosen by the people, and supposed to be the best acquainted with their interest and ability. In order to make them more particularly acquainted with these objects, the democratic branch of the legislature consisted of a greater number, and were chosen for a shorter period; that so they might revert more frequently to the mass of the people.

The Founders' Constitution
Volume 2, Article 1, Section 7, Clause 1, Document 11
http://press-pubs.uchicago.edu/founders/documents/a1_7_1s11.html
The University of Chicago Press

Annals of Congress. The Debates and Proceedings in the Congress of the United States. "History of Congress." 42 vols. Washington, D.C.: Gales & Seaton, 1834--56.