Headline: Why It's So Hard to Know How Many Immigrants Are in US IllegallyLink: https://www.newsweek.com/immigration-donald-trump-border-joe-biden-illegal-immig…Publication Date: Wednesday, September 18, 2024Primary Source: NewsweekNon-Cato Author: Dan GoodingType: articleFormat: Newspaper (Online)Nature of Mention: quotedScholar: Bier, DavidResearch Area: Immigration and Labor MarketsSubjects: the number of illegal immigrants in the US