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A practice in which a company refuses to market its products in a certain area because it is disproportionately poor, has a high rate of default, and/or has a large minority population. Examples of products where a company may practice red-lining are health insurance and mortgages. Red-lining is illegal because these products should be offered based on individual creditworthiness. Those who support the illegality of red-lining argue that it promotes equality between races and classes, while critics contend that it leads to needless distortions in the market. See also: Fair Housing Act of 1968, Community Reinvestment Act.