As a student of law and history I found this interesting.
Following the presidential election of 1904, charges were made against the victor, Theodore Roosevelt, regarding his acceptance of corporate contributions to his campaign. In response, Roosevelt in his annual address to Congress in 1905 called for the prohibition of such contributions:
Roosevelt repeated his call in the report to Congress for 1906, saying "I again recommend a law prohibiting all corporations from contributing to the campaign expenses of any party. Such a bill has already passed one House of Congress. Let individuals contribute as they desire; but let us prohibit in effective fashion all corporations from making contributions for any political purpose, directly or indirectly."
In response to Roosevelt's call, Senator Benjamin Tillman of South Carolina sponsored the bill that became known as the Tillman Act. The bill passed the Senate on June 9, 1906. On June 17, 1906, The New York Times reported that "One 'great financial authority who is a Republican' gave assurance that 'he and all the financial men with whom I have talked have welcomed this legislation with very much the same emotions with which a serf would hail his liberation from a tyrannous autocrat'." The article further stated that if the bill passes the House, "it will not bring about the millennium, but will lessen a very mean and sordid practice of blackmail... the great number of corporations that have suffered extortion through weakness and cowardice will have their backbones stiffened, and parties will be put to it to fill their coffers by really voluntary contributions."
The Senate bill was subsequently amended to add a minimum fine provision and the possibility of a prison term for officers and directors. It was signed into law by President Roosevelt on January 26, 1907. The Act provided in full as follows:
The language of the Act provided for penalties but no actual enforcement method. No Federal Election Committee existed to enforce the provisions. There were no existing disclosure requirements for candidates accepting contributions, and so there was no effective way to enforce the new law. The Act applied to general elections, but not primary elections. In the South, the grip of the Democratic party was absolute, and so the primary election was the most important contested race. Further, a corporation could circumvent the law by directing its officers or directors to make personal contributions to a candidate, which were not prohibited, and then simply give them bonuses at year end to effectively reimburse them for those contributions. The Tillman Act was therefore simply a first step towards regulation of campaign finance. Additional steps would be taken by Congress in the disclosure provisions of the Publicity Act of 1910 (also known as the Federal Corrupt Practices Act), and the extension of the Tillman Act to primary elections in the 1911 amendments to the Tillman and Publicity Acts