LULAC, together with several other organizations, sued the Trump Administration to block an unconstitutional executive order denying U.S. citizenship to children born on U.S. soil. The lawsuit charges the Trump administration with flouting the Constitution’s dictates, congressional intent, and longstanding Supreme Court precedent.

In March 2025, LULAC sued the Trump administration to block an unconstitutional executive order restricting people’s ability to vote. In April, the judge issued a preliminary injunction barring parts of that executive order from going into effect.

In 2021, the Texas government gerrymandered the state to muffle the voting power of the state’s growing Latino population, and now in 2025 the government has pushed its racial gerrymander even further. LULAC has filed suit to block both gerrymanders and restore a Texas map which gives the state’s Latino citizens their right to representation.

In May 2025, ICE seized a lawful asylum-seeker named Adrián Rengel from his home in New York and sent him to an El Salvadoran mega-prison where he was brutally abused. LULAC has worked with Rengel to bring a lawsuit against the US government seeking compensation for the wrongs done him.

In August 2025, LULAC co-filed a brief to support Rep. Gene Wu against Gov. Abbott’s unconstitutional attempt to punish Rep. Wu for taking a stand against redistricting. Governor Abbott’s effort would deprive nearly 200,000 Texans of their duly elected representative, a blow against democracy which flies directly in the face of the Texas Constitution.

In May 2025, LULAC co-filed a brief to help oppose Florida’s new law imposing harsh requirements on its direct democracy Ballot Initiative Process. In July, a judge issued a narrow preliminary injunction barring Florida from requiring petition circulators to prove their citizenship.

In 1946, LULAC helped sue California over its longstanding policy of segregating Latino children into separate schools. LULAC’s victory in Mendez forced California to integrate its public schools, securing equal educational opportunity for California’s Latino population and laying the groundwork for Brown v. Board.

As of 1948, Texas school districts had long excluded Mexican American children, claiming that Mexican Americans could not be taught because they spoke Spanish. LULAC sued and won a major judgment declaring the policy unconstitutional, forcing the school district to agree to integrate its schools.

In 1954, LULAC won a landmark Supreme Court victory securing Latinos the right to serve on juries and barring government discrimination against Latinos. The Supreme Court ruled unanimously for LULAC, holding that the Equal Protection Clause guarantees equal treatment to Latinos.

In 1986, Congress passed a law offering legalization to undocumented immigrants who had resided in the U.S. for the last five years—but the Administration denied amnesty to many applicants who qualified. LULAC leapt into action, suing to secure their right to legalization, and ultimately winning after a ten-year legal battle.

In 1989, LULAC brought LULAC v. Florida Board of Education to secure the right to equal education for English-Learner students in Florida public schools. After a year of negotiation, Florida agreed to a Consent Decree which has served as Florida’s framework for offering equal educational opportunity ever since.

In 1994, California voters passed a draconian new anti-immigration law called Prop 187 denying undocumented people public education and services and aiming to promote mass deportation. LULAC immediately challenged the measure in court, suspending the law in a matter of days, and then winning a major 1997 judgment declaring the law unconstitutional.

In 2006, the Texas Republican Party redistricted the state in the middle of the decade to reduce the power of Latino voters. LULAC sued, and the Supreme Court ultimately held that key parts of Texas’s plan were unconstitutional because they engaged in racial discrimination.

In 2004, 2017, and 2023, Arizona passed repeated laws designed to make it harder for Latino citizens to register to vote in federal elections. Each time, LULAC immediately filed suit to block the laws and defeated them—through a Supreme Court victory, a Consent Decree, and most recently in the Ninth Circuit.

As of 1992, Texas spent far less on higher education in the predominantly-Latino Border counties than in the rest of the state. LULAC sued, and though the Texas Supreme Court refused to rule in LULAC’s favor, the lawsuit mobilized the Texas legislature to massively increase investment in higher education along the border.