title: Aliens in irregular status in the United States:  a review of their numbers, characteristics, and role in the U.S. labor market.
authors.forename: M F
authors.initials: MF
authors.lastname: Houstoun
mesh_terms: D000569:Americas; D002489:Central America; D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D004641:Emigration and Immigration; D004651:Employment; D006280:Health Workforce; D008800:Mexico; D009656:North America; D011153:Population; D011157:Population Dynamics; D014171:Transients and Migrants; D014481:United States
keywords: Americas; Central America; Demographic Factors; Developed Countries; Developing Countries; Economic Factors; Human Resources; Illegal Migrants; International Migration; Labor Force; Mexico; Migrants; Migration; North America; Northern America; Population; Population Dynamics; Temporary Migration; United States