1个妮可·普拉切尔·斯瓦利卡(Nicole prchal Svajlenka),“保护大流行前线的无证件工人:移民对美国的康复至关重要”(华盛顿:美国进步中心,2020年),可在https:// www.americanprogress.orgress.orgress.orgress.ormigration/immigration/migmigration/emertiment/protect/2020/2020/2020/12/02/4933333333333年工人 - 束缚 - 前线/。Estimates presented in this fact sheet are based on CAP analysis of pooled 2018 and 2019 1-year American Community Survey (ACS) micro- data, accessed via Steven Ruggles and others, “Integrated Public Use Microdata Series, U.S. Census Data for Social, Economic, and Health Research, 2018 and 2019 American Community Surveys: 1-year estimates” (Minneapolis: Min- nesota Population Center, 2020), available at https://美国。ipums.org/usa。