Rodenberg was elected to the 64th and to the three succeeding Congresses (March 4, 1915 – March 3, 1923). On April 5, 1917, he voted with 49 other representatives against declaring war on Germany.
During his time in office, Rodenberg was elected to the 64th and subsequent three Congressional terms (March 4, 1915 – March 3, 1923). He took a stance against declaring war on Germany on April 5, 1917, as part of a minority group of 49 representatives.