Homogenization (chemistry) Homogenization or homogenisation is any of several processes used to make a mixture of two mutually non-soluble liquids the same throughout. This is achieved by turning one of the liquids into a state consisting of extremely small particles distributed uniformly throughout the other liquid.
The FBI is led by a Director, who is appointed by the U.S. President and confirmed by the Senate for a term not to exceed 10 years. The current Director is James B. Comey. You can find information on all Directors who have served the FBI on our History website.
The job of protecting presidents started in 1894 with Grover Cleveland, who was guarded part time. That role expanded after the assassination of William McKinley in 1901, and it became a crime to threaten the president in 1917. Today, guarding the president and other top officials accounts for most of the Secret Serviceâs budget, which totals about $1.4 billion per year and continues to grow.