- Immigration Committee81
- Immigration Committee, Senate381
- Immigration and Naturalization Committee203
- Immigration and Naturalization Committee, House993
- Inauguration Joint Committee1
- Inauguration of President and Vice President, Joint Committee on Arrangements for2
- Indian Affairs Committee1,452
- Indian Affairs Committee, House1,024
- Indian Affairs Committee, Senate1,122
- Indian Affairs, Committee9
- Indian Affairs, Joint Commission to Investigate12
- Indian Depredations Committee2
- Indian Service Investigation Committee1
- Indian Tuberculosis Sanitarium and Yakima Reservation Project, Joint Commission on2
- Industrial Arts and Expositions Committee56
- Industrial Expositions Committee13
- Industrial Expositions Select Committee2
- Industrial Relations Commission10
- Inferior and Insular Affairs Committee, Senate4
- Infernal Security Committee, House1