Labrum - a cover which may be loosely referred to as the upper lip. Mandibles - hard, powerful cutting jaws. Maxillae - 'pincers' which are less powerful than the mandibles. They are used to steady and manipulate the food. Labium - the lower cover, often referred to as the lower lip.
The President, as head of the federal executive branch, is ultimately in charge of enforcing the immigration laws of the United States. In turn, he must make discretionary decisions about whether and when to prosecute immigration law violators through deportation and other sanctions.
Delegation of Immigration Authority Section 287(g) Immigration and Nationality Act. U.S. Immigration and Customs Enforcement (ICE), the largest investigative agency in the Department of Homeland Security, enforces federal immigration laws as part of its homeland security mission. ICE works closely with federal, state and local law enforcement partners in this mission.