Who is Hispanic?

Debates over who is Hispanic and who is not have fueled conversations about identity among Americans who trace their heritage to Latin America or Spain. The question surfaced during U.S. presidential debates and the confirmation of Sonia Sotomayor to the U.S. Supreme Court. More recently, it bubbled up after a singer from Spain won the “Best Latin” award at the 2019 Video Music Awards.

So, who is considered Hispanic in the United States? And how are they counted in public opinion surveys, voter exit polls and government surveys like the...