Slavery in the United States July 30, 2008, the United States House of Representatives passed a resolution apologizing for American slavery and subsequent discriminatory laws. The U.S. Senate unanimously passed a similar resolution on June 18, 2009, apologizing for the "fundamental injustice, cruelty, brutality, and inhumanity of slavery". It also explicitly states that it cannot be used for restitution claims. A 2016 study, published in The Journal of Politics, finds that "Whites who currently live in Southern counties that had high shares of slaves in 1860 are more likely to identify as a Republican, oppose affirmative action, and express racial resentment and colder feelings toward
Slavery in the 21st century environments where enforcement is cheap, and less attractive in environments where the wage-rate is low and enforcement is expensive. Free workers also earn compensating differentials, whereby they are paid more for doing unpleasant work. Neither sustenance nor enforcement costs rise with the unpleasantness of the work, however, so slaves' costs do not rise by the same amount. As such, slaves are more attractive for unpleasant work, and less for pleasant work. Because the unpleasantness of the work is not internalised, being borne by the slave rather than the owner, it is a negative externality and leads to over-use of slaves