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In 2003, nearly 26 percent of foreign-born TB patients in the United States were from Mexico. Another third of the foreign-born cases were among those from the Philippines, Vietnam, India and China, the CDC report said.[45][46][47]The history of HIV/AIDS in the United States began in about 1969, when HIV likely entered the United States through a single infected immigrant from Haiti.[48][49][edit] Economic argumentsEconomic needs-driven immigration is opposed by labor-market protectionists, often arguing from economic nationalism. The core of their arguments is that a nation's jobs are the 'property' of that nation, and that allowing foreigners to take them is equivalent to a loss of that property. They may also criticise immigration of this type as a form of corporate welfare, where business is indirectly subsidised by government expenditure to promote the immigration and the assimilation of the immigrants.[50] A more common criticism is that the immigrant employees are almost always paid less than a non-immigrant worker in the same job, and that the migration depresses wages, especially as migrants are usually not unionised. Other groups feel that the focus should be not on migration control, but on equal rights for the migrants, to avoid their exploitation.Concerns regarding the cost of immigration, such as the provision of schools for the additional population, are prominent in the United States and Canada. See Economic impact of immigration to Canada. Although much current research has pointed to the fact that the U.S. and Canada are actually dependent on migrant labor, see The Center for U.S. - Mexico Immigration Analysis.Scholars have come to various opinions about the economic effects of immigration. Those who find that immigrants produce a negative effect on the US economy often focus on the difference between taxes paid and government services received and wage-lowering effects among low-skilled native workers.[51][52] The economic impact of immigration differs by immigration category. For example, according to Statistics Canada, there are significant differences in the labour force participation rates. 2001 labour statistics by immigration category:[53]