He distinguished himself in this post by winning a tax suit of over a million dollars against the railroads.

During his term he served as the chairman of the Committee on Patents (Sixty-first and Sixty-second Congresses).

He proposed permitting an income tax, later incorporated into the Sixteenth Amendment of the U.S. Constitution.

He then resumed the practice of law in Omaha where he became senior partner in the firm of Brown, Crossman, West, Barton, and Quinlan.

Brown died there January 5, 1960, and was interred in Forest Lawn Cemetery in Omaha.