Castaneda v. Partida

1977-03-23

Headline: Ruling finds Texas grand jury selection discriminated against Mexican‑Americans, rejects 'governing majority' defense, and holds the State failed to rebut a prima facie showing, requiring counties to explain selection disparities.

Holding: The Court held that the defendant proved a prima facie case of discrimination in Hidalgo County's grand jury selection and that the State failed to rebut this showing, violating equal protection.

Real World Impact:

Requires counties to explain large group disparities in jury selection.
Makes States produce evidence when statistical gaps suggest discrimination.
May push counties toward more neutral or documented jury selection methods.

Topics: grand jury selection, racial discrimination, jury selection reform, Mexican-American rights

Summary

Background

The case was brought by Rodrigo Partida, a prisoner convicted after a 1972 indictment in Hidalgo County, Texas, and challenges the county's grand jury selection. The State, represented by the sheriff, used Texas' key‑man system where jury commissioners pick lists. Partida introduced 1970 census data showing 79.1% of the county was Spanish‑surnamed (treated as Mexican‑American) but only 39% of grand jurors over eleven years were Spanish‑surnamed; the grand jury that indicted him had a 50% Spanish‑surname list. After state courts rejected his claim, he pursued federal habeas relief.

Reasoning

The Court addressed whether these statistics created a prima facie case of discrimination and whether the State rebutted it. The Court explained that a large statistical gap plus a subjective selection method shifts the burden to the State to show neutral reasons. Because the State offered almost no evidence (the commissioners were not called) and relied on a "governing majority" idea without record proof, the Court found the State failed to rebut the inference of purposeful discrimination and affirmed the denial of equal protection.

Real world impact

The ruling means counties using subjective selection must explain disparities when faced with statistical proof; Mexican‑Americans in Hidalgo County were found to have been underrepresented and the State's failure to explain led to a constitutional finding. The decision will push local authorities to document selection methods or move to more neutral systems, and it reinforces that large disparities require factual explanations.

Dissents or concurrances

Justice Marshall joined and emphasized the strength of the statistics and the need for state explanation. Several Justices dissented, arguing the statistics were overbroad, that eligible‑population measures and local political control undercut an inference of discrimination, and that the District Court's findings should stand.