William Howard Taft faced a unique challenge upon assuming the presidency, as he sought to appoint Philander C. Knox as his Secretary of State. Knox had previously served as a U.S. Senator, and his prior position raised a question concerning the Constitution's Ineligibility Clause, which prohibits members of Congress from taking appointed executive branch positions. To overcome this legal barrier, Taft resorted to a novel solution known as the Saxbe fix, a legislative mechanism that allows for such appointments under specific circumstances. This fix was crucial in ensuring that Knox could transition smoothly from his role in the Senate to lead the State Department.

On March 4, 1909, Taft proposed a legislative measure that effectively amended the law governing executive appointments, thereby circumventing the restrictions posed by the Ineligibility Clause. The maneuver was timely, occurring on Taft's first day in office. The implementation of the Saxbe fix, although controversial, established a precedent for future administrations facing similar constitutional dilemmas. Taft's bold decision not only bolstered his cabinet but also reflected a pragmatic approach to governance early in his presidency.

In appointing Knox, a prominent figure in the Republican Party, Taft aimed to consolidate his administration's credibility and stability in foreign affairs. Knox was known for his experience and political connections, making him a suitable choice to navigate the complexities of international diplomacy at the time. The appointment ultimately led to a focus on enhancing U.S. relations with other nations, particularly as the country moved into the 20th century, signifying a period of expanding American influence globally.