By Nicholas Sakelaris, UPI

When census takers tally the U.S. population next year, their final count could be off by as many as 4 million people, a new analysis says.

The study by the Urban Institute, a Washington, D.C., social think tank, cautioned that various factors like underfunding, staffing issues, inadequate testing and a possible question about citizenship could lead to census miscalculation. The study said those issues pose “unprecedented threats” that disproportionately affect minority groups.

Urban Institute’s chief methodologist Robert Santos said black and Latino households face the greatest risk of being undercounted, while some white homes are likeliest to be overcounted.

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Immigration Is One of Many Issues That Can Disrupt 2020 Census, Study Says