He greatly hastened the passage of the McKinley Bill in 1890, and of the Dingley Bill in 1897.
After the war McKinley returned to Poland, and bent all his energy upon the study of law.
He was postmaster-general in the cabinet of Presidents McKinley and Roosevelt from April 1898 until January 1902, and did much to develop the rural free delivery system.
President McKinley showed himself singularly patient and self-controlled in the midst of the popular excitement against Spain and the clamour for intervention by the United States in behalf of the Cubans; but finally, on the 23rd of March, he presented an ultimatum to the Spanish government, and on the 25th of April, on his recommendation, Congress declared war upon Spain.
In the senate, to which in January 1898 he was elected for the short term ending on the 3rd of March 1899 and for the succeeding full term, he took little part in the debates, but was recognized as one of the principal advisers of the McKinley administration, and his influence was large in consequence.
Forest Park (464 acres), in the southern part of the city, is the largest and most attractive; it contains a good zoological collection, and in its ponds is one of the finest collections in America of lotus plants and Oriental aquatic flora; at its southern entrance is a monument to President McKinley by Philip Martiny.
Although this policy was entered upon at the conclusion of the Spanish War under the presidency of Mr McKinley it has been very largely shaped by Mr Roosevelt.
And it may not be fanciful to suggest that the obvious growth of McKinley in breadth and power during his term as president was due to his being the representative of a larger constituency, less local and less narrowminded.
From 1885 to 1891 he was a representative in Congress, and, as a member of the Ways and Means Committee, helped to draft the McKinley Tariff bill.
In early life he had little time for politics, but after 1880 he became prominent in the affairs of the Republican party in Cleveland, and in 1884 and 1888 was a delegate to the Republican National Convention, in the latter year being associated with William McKinley in the management of the John Sherman canvass.