Detailed Analysis:

• Claim: Immigrant population in the U.S. dropped for the first time in decades.
• Verification Source #2: Reports that California experienced population decline during the COVID-19 pandemic, partly due to drops in international migration.
• Verification Source #4: States that immigration accounted for the entire growth of the total U.S. population between 2022 and 2023.
• Verification Source #5: Reports that rural America lost population between 2010 and 2020.
• Assessment: Mixed. While the sources indicate population shifts and declines in specific areas or groups, they don't directly confirm or contradict a nationwide drop in the *total* immigrant population for the first time in decades. Source 4 suggests immigration was the *entire* growth of the US population between 2022 and 2023, which could imply a decline in other population segments, but doesn't directly address the immigrant population itself. The claim is plausible but requires more specific verification for the timeframe mentioned in the article.
• Claim: Between January and June, the foreign-born population declined by nearly 1.5 million (according to a Pew Research Center analysis of census data).
• Verification Source #1: Reports on the decline of Mexicans as a percentage of the U.S. undocumented immigrant population.
• Verification Source #3: Reports that more Mexicans came to the U.S. than left for Mexico between 2013-2018.
• Assessment: Unverified. While Pew Research Center is a reliable source, the provided sources do not directly confirm or deny this specific claim about a 1.5 million decline between January and June. Sources 1 and 3 discuss Mexican immigration trends, but not a total decline of 1.5 million in the foreign-born population within that specific timeframe. Without the specific Pew study cited, this claim remains unverified.