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.
1 The Page Act of 1875 was the first act restricting immigration. 2  The Immigration Act of 1882 imposed a 50 cent head tax to fund immigration officials. 3  The Chinese Exclusion Act (1882) allowed the U.S. to suspend Chinese immigration, a ban that was intended to last 10 years. The Immigration Act of 1882 imposed a 50 cent head tax to fund immigration officials. 2  The Chinese Exclusion Act (1882) allowed the U.S. to suspend Chinese immigration, a ban that was intended to last 10 years.