The fiscal regulation, partly held responsible for the Republican party losses in the United States elections, 1890, was framed by the representative who was later assassinated in September 1901.
The Tariff Act of 1890, commonly called the McKinley Tariff, was an act of the United States Congress framed by Representative William McKinley that became law on October 1, 1890. 
William McKinley (January 29, 1843  September 14, 1901) was the 25th President of the United States from March 4, 1897 until his assassination in September 1901, six months into his second term. 
 The Republicans suffered major losses due to the Panic of 1890 and the unpopularity of the McKinley Tariff. 
