Wachter was elected as a Republican to the Fifty-sixth and to the three succeeding Congresses, serving from March 4, 1899 to March 3, 1907. He was not a candidate for renomination in 1906, and resumed his former business pursuits in Baltimore.
Wachter was elected as a Republican to the Fifty-sixth and succeeding Congresses, serving from March 4, 1899 to March 3, 1907. He opted not to seek re-election in 1906, then resumed his pre-political business activities in Baltimore.