In 1848, Broomall was appointed deputy attorney general for Delaware County by Attorney General Cooper. Broomall served in the
Union Army as Captain of Company C, Twenty-ninth Regiment, Pennsylvania Emergency Militia Infantry, from June 18 to August 1, 1863. In 1862, Broomall was elected as a Republican to the
Thirty-eighth,
Thirty-ninth, and
Fortieth Congresses. An active opponent of slavery, he signed the 13th amendment to the Constitution. He also advocated for a universal suffrage amendment. He served as chairman of the
United States House Committee on Accounts during the Fortieth Congress. He was not a candidate for renomination in 1868. In 1874, Broomall resumed the practice of law. He and his law partner
William Ward began investing in real estate in Chester, Pennsylvania building homes in the south ward. Broomall was a delegate to the State constitutional convention. In March 1874, he was appointed President Judge of the newly created Thirty-Second Judicial District of Pennsylvania by Governor
John F. Hartranft and served until January 1875, when he lost election to the position to
Thomas J. Clayton. Broomall was an originator and President of the Delaware County Mutual Insurance Company as well as the first president of the Chester Gas Company. He was elected president as the first president of the Law Library Association of the Delaware County bar and as president of the
Delaware County Institute of Science. ==Personal life==