I was actually a little confused about the difference between ICE & CPB, so here's a little info I found:
Courtesy of:
http://www.dorsey.com/news/news_detail.aspx?id=230796903
One of the first significant actions taken by the U.S. Government after the events of September 11, 2001, was the creation of the Department of Homeland Security (“DHS”). Since the creation of the DHS, all of the important functions of the former U.S. Customs Service have been moved from the Treasury Department to DHS. Within DHS, the enforcement component of the former U.S. Customs Service was separated from the commercial, or trade facilitation, components, resulting in the creation of the Bureau of Immigration and Customs Enforcement, commonly referred to as “ICE.” The other components were transferred to the new Bureau of Customs and Border protection, now referred to as CPB. ICE and CBP are now collectively known as “Customs.”
The new ICE was formed with not only special agents from the former Customs Service, but also agents from the former Immigration and Naturalization Service. CBP was formed with not only import specialists from the old Customs Service, but also personnel from Border Patrol and the U.S. Department of Agriculture.
The creation of DHS, and, within it, ICE and CBP, was much more than a mere name change and a shuffling of government personnel into new agencies. The primary mission of Customs became securing our Nation’s borders from terrorist threats, with a secondary mission of facilitating international trade, even though Customs officials are quick to point out that their intention is to place equal emphasis on both missions.
