Illegal aliens are people living in the U.S.A with proper__1__ authorization. Many entered the country by sneaking across the border. Others came on temporary student or visitor visas and did not leave until their visas were expired.__2__ Most illegal aliens want to stay in the U.S.A. because employment opportunities are so much great than in their native country. Since illegal aliens try hard not to be discovered by the government, it is possible to get an __3__ accurate count of them. Recent estimates ranged from __4__ 2.5 million to as high as 12 million. In 1986, the United States government adopted a new law affected illegal aliens— __5__ the Immigration Refrom and Control Act. This law was designed to accomplish two main goals:1) to allow illegal aliens who have been living in the country since __6__ January, 1982 to gain legal status if they applied by May 4,1988; and 2) to encourage others from coming into or __7__ staying in the country illegally by making difficult for__8__ undocumented people to find employment. The law prohibits American employers from hiring illegals and providing for severe penalties—fines and even imprisonment—__9__ if they do so. This new law has helped large number of__10__ formerly illegal aliens to become legal residents. But it also forces employers to check on all prospective employees who look or sound foreign to be sure that they have documents allowing them to work. This may discourage some employers from hiring any immigrants.