[2] It was enacted by the 67th United States Congress and signed into law by President Warren G. Harding on June 10, 1921.
[5] For extending telephone service nationwide, new technologies had to be developed to propagate telephony signals over ever-increasing distances.
In response to this, the attorney general referred the case to the Interstate Commerce Commission (ICC), which began an investigation.
[6] This consisted of a letter from AT&T stating that "Bell agreed to provide interconnection to the independents and to refrain from further acquisitions.
The Willis-Graham Act, which was passed in 1921, shifted merger oversight to the ICC, lessening AT&T's constraints on the acquisition of competitors.