The Supreme Court ruled Tuesday that border officers do not need clear and convincing evidence that a lawful permanent resident has committed a crime before placing them on immigration parole, a decision that immigration advocates warn could leave millions of green card holders vulnerable to detention and deportation over unproven allegations.

The 6-3 decision in Blanche v. Lau marks a significant victory for the Trump administration's immigration enforcement agenda and could have far-reaching consequences for the 12.8 million lawful permanent residents living in the United States .

The case centered on Muk Choi Lau, a Chinese citizen who became a lawful permanent resident in 2007. In May 2012, New Jersey authorities charged Lau with trademark counterfeiting. While awaiting trial on the charges, Lau traveled to China. When he returned to the United States on June 15, 2012, a border officer at John F. Kennedy International Airport noted the pending criminal case and refused to admit him as a returning permanent resident .

Instead, the officer placed Lau on immigration parole, a legal designation that treats the person as though they remain at the border for immigration purposes. Officers confiscated Lau's physical green card, and he was allowed into the country conditionally while his criminal case proceeded .

Lau later pleaded guilty to the counterfeiting charge and received probation. The Department of Homeland Security then initiated removal proceedings against him, arguing that his conviction made him inadmissible .

Legal Battle Over Evidence Standards

Lau challenged the government's actions, arguing that the border officer had overstepped his authority by placing him on parole without sufficient evidence that he had committed a qualifying offense. An immigration judge and the Board of Immigration Appeals ruled against Lau, but the U.S. Court of Appeals for the Second Circuit sided with him in 2025 .

The Second Circuit held that border officers must have clear and convincing evidence that a lawful permanent resident has committed a crime involving moral turpitude before treating them as "seeking admission" rather than already admitted. The court found that a pending criminal charge alone did not meet this standard .

The Supreme Court vacated that decision Tuesday. Writing for the majority, Justice Clarence Thomas held that federal immigration law does not require border officers to meet a heightened evidentiary standard when making such determinations .

"Nothing in the INA imposes that burden," Thomas wrote in the nine-page majority opinion. The court explained that while the statute carefully assigns burdens of proof during removal hearings, it places no comparable evidentiary standard on officers making initial determinations at the border .

Thomas rejected Lau's argument that a lawful permanent resident cannot be found to have committed a crime involving moral turpitude until a conviction exists, writing that "a straightforward reading of the text contradicts Lau's interpretation" .

Dissent Warns of 'Massive Blank Check'

Justice Ketanji Brown Jackson issued a sharply worded dissent joined by Justices Sonia Sotomayor and Elena Kagan. Jackson argued that the majority's decision undermines "the benefits and security that come with having a green card" and effectively hands the government unchecked power .

"I worry that the Court has now handed the Government a massive blank check," Jackson wrote, warning that an administration hostile to immigration could weaponize routine travel to leave legal residents vulnerable to mandatory detention over allegations that may ultimately be dismissed .

The consequences of parole status are significant, Jackson noted. Green card holders placed on parole lose physical possession of their permanent resident cards, making it "harder to work, open bank accounts, secure housing, obtain health insurance, and enroll in school" . They may also face mandatory detention and removal proceedings in which the burden of proof shifts to the individual .

Jackson emphasized that "it is a fundamental maxim in our country that all are innocent until proven guilty," yet Lau was stripped of his already-admitted status and placed in immigration limbo based on an indictment alone .

Implications for Green Card Holders

The decision has immediate practical consequences for lawful permanent residents, particularly those with criminal histories. The classification of a returning resident as "seeking admission" rather than already admitted determines which removal track applies and which party bears the burden of proof .

If a returning resident is treated as already admitted, the government may pursue removal only on deportability grounds and carries the burden of proof. If the resident is treated as seeking admission, however, the government proceeds on inadmissibility grounds, where the burden shifts to the individual to prove admissibility .

Inadmissibility charges can also reach a broader set of offenses and lack some time limits that apply on the deportability side. Residents reclassified in this way may be paroled into the country, detained, issued temporary evidence of status, or referred to immigration court .

Immigration attorneys have expressed concern that border officers may overuse their newly affirmed authority. "It is very disturbing in the breadth of its reach, and I think we can expect border officers to overuse the power that they're given here," said Nancy Morawetz, a law professor and director of the Crimmigration Clinic at New York University .

The court's decision does not mean that border agents can immediately deport green card holders. Officers still need a basis to conclude that a resident has committed a qualifying offense, and the government must ultimately prove its case in removal proceedings . But the ruling significantly lowers the threshold for stripping residents of their permanent status at the border.

Broader Immigration Context

The decision comes as the Supreme Court considers several other high-profile immigration cases, including challenges to the Trump administration's efforts to end birthright citizenship, revive restrictive asylum policies, and terminate temporary legal protections for migrants fleeing war and natural disasters .

The ruling reflects the court's willingness to give the executive branch broad authority over immigration enforcement matters. Thomas noted that border officers must make "quick judgments on the spot," suggesting that requiring a higher evidentiary standard at the border would be impractical .

The case also highlights the administration's increasingly aggressive posture toward legal immigration pathways. The Trump administration has argued that suspicion of a crime is sufficient to strip green card holders of their legal status, part of a broader effort to roll back legal protections for migrants and expand deportation powers .

What's Next for Green Card Holders

For lawful permanent residents, the decision sends a clear message about the risks of international travel. Any green card holder with a criminal charge, prior conviction, or even arrest in their history faces elevated risk of being placed on parole and subjected to removal proceedings .

The case remains pending on remand to the Second Circuit, which must now determine whether Lau's trademark counterfeiting offense qualifies as a crime involving moral turpitude. If it does not, Lau may still prevail and avoid removal .

But for the millions of other green card holders across the country, the court's decision has already changed the legal landscape. As Justice Jackson warned, the threat extends far beyond residents with pending criminal arrests to anyone who may be accused of a qualifying offense .

Immigration attorneys are urging green card holders with any criminal history to consult experienced legal counsel before traveling abroad, and to understand their rights at the port of entry .