The successful campaign to make a terrifying Supreme Court immigration case disappear
If you felt a gust of wind late on Friday, it came from hundreds of immigration lawyers who simultaneously exhaled after the Supreme Court announced it would not hear a case known as Genalo v. Black. That case asked whether certain immigrants could be held in immigration detention facilities indefinitely without ever receiving a bond hearing or other opportunity to seek temporary release. And if the Court had decided this case, its recent immigration decisions suggest that most of the justices may have blessed indefinite detention.
The Black case originally concerned two lawful permanent residents of the United States who were arrested during the first Trump administration because of crimes the two men committed years before, and that they had already served prison sentences for committing.
These immigrants were arrested because of a federal law, which provides that the federal government “shall take into custody” noncitizens who committed certain crimes or who are accused of involvement with terrorism so that the government may begin deportation proceedings against these individuals. This law does not allow these noncitizens to challenge their detention while their deportation case is pending. (Notably, the relevant federal law sometimes allows an immigrant to be detained without hearing if they are merely suspected of terrorism, which means the person could be detained indefinitely based on false allegations.)
Both men sued, claiming that it is unconstitutional to hold them for too long without some kind of hearing to determine whether they should be released after paying a bond. And a federal appeals court agreed, holding that “due process bars the Executive from detaining such individuals for an unreasonably prolonged period…without a bond hearing.”
Thus, Black was more than just another flashpoint in America’s debates over immigration. It was a test of one of the most fundamental protections that a liberal society provides to its residents — the right not to be locked up, forever, without any way to challenge the basis of that detention.
Now that the Supreme Court has removed the Black case from its own docket, this appeals court decision will not be formally repudiated by the Supreme Court. So immigrants who are detained indefinitely may still ask courts to give them a bond hearing — at least for now.
Still, the Court’s non-decision in Black leaves a cloud of uncertainty hanging over similarly situated immigrants. The Trump administration will no doubt continue to detain people for prolonged periods of time (most of whom won’t be able to obtain a gubernatorial pardon, like one of the men was in this case). And the question of whether these immigrants can be detained forever will remain unresolved until the Supreme Court takes up another case involving a similarly situated immigrant.
Why the case was dismissed
Both men at the heart of the Black case spent significant amounts of time in immigration detention facilities years after serving sentences for crimes. One, a Jamaican citizen named Carol Williams Black, spent seven months in an immigration detention facility. The other, Keisy Guerrero Mariano, spent 21 months in detention without a bond hearing or other procedure that could allow him to seek release while his case was pending. These 21 months in immigration detention more than doubled the time he spent in New York state prison for his actual crime — he pled guilty to second-degree assault after he got into a fight outside a New York City restaurant.
But there is no longer a legal dispute about what should happen to either man — in the words of the law, both cases are now moot. Black has since been released from detention and says that he “made the difficult decision to leave the United States” and has no intention to return. And the Trump administration’s case against Guerrero Mariano went up in smoke in late August, after New York Gov. Kathy Hochul gave him a pardon — thus wiping away the conviction that allowed the Trump administration to detain Guerrero Mariano in the first place.
Guerrero Mariano is one of six individuals that Hochul pardoned at the time. In her official announcement, she said that she did so because these six people “have demonstrated remorse, exemplified rehabilitation and displayed a commitment to improving themselves and their communities.”
There’s also a great deal of evidence indicating that Hochul pardoned Guerrero Mariano in order to resolve his immigration case — and potentially keep the Supreme Court from deciding Black. Among other things, the actual pardon document signed by Hochul specifically states that it will grant Guerrero Mariano “relief from removal.” Guerrero Mariano’s lawyers had sought this pardon, and Hochul granted it mere days before his brief was due in the Supreme Court.
That brief’s very first sentence, moreover, states that Hochul “granted Respondent Keisy G.M. a full and unconditional pardon of the state criminal conviction that is the sole basis for his removal,” and it urges the justices to dismiss the case as moot.
Last Thursday, Trump’s Justice Department joined a stipulation calling for the justices to dismiss the case against Guerrero Mariano, most likely because even they recognized that a lawful permanent resident with no conviction may not be detained. The Court granted that request on Friday.
So that’s good news for Guerrero Mariano, who presumably will now be able to live freely in the United States.
Guerrero Mariano’s lawyers were right to fear a trip to the Supreme Court
It’s possible that the Supreme Court might have agreed with the lower court’s holding that immigrants who are detained for an “unreasonably prolonged period” have a constitutional right to a bond hearing — this Court has, on rare occasions, broken with the Trump administration in immigration cases. But those decisions are few and far between.
Among other things, this Court has allowed President Donald Trump to deport immigrants back to war zones. The Court’s Republican majority effectively nullified the Convention Against Torture, a treaty that is supposed to protect immigrants from being deported to nations where they will be tortured. The Court also blessed so-called “Kavanaugh stops,” which permit suspected immigrants to be racially profiled so long as their race or ethnicity isn’t the sole reason why they are stopped by law enforcement.
Moreover, while the United States Court of Appeals for the Second Circuit’s decision in Black — the one holding that immigrants like Guerrero Mariano may receive a bond hearing if their detention is “unreasonably prolonged” — reached a plausible legal conclusion, this conclusion was not a slam dunk under the Supreme Court’s previous precedents. And that means that the justices could have easily come up with a reason to reverse that decision if they wanted.
On the one hand, the Court said in Zadvydas v. Davis (2001) that “a statute permitting indefinite detention of an alien would raise a serious constitutional problem.” On the other hand, the Court held in Demore v. Kim (2003) that an immigrant similarly situated to Guerrero Mariano may “be detained for the brief period necessary for their removal proceedings.”
Read together, these decisions suggest that the government does have some power to detain people while their immigration case is pending. While Zadvydas indicates that this detention can go on for too long, the Court has never established when an immigrant’s detention has stretched too long. So that means that the justices would have a fair amount of leeway to allow prolonged detentions without defying any of their previous precedents.
So it’s clear why everyone from Guerrero Mariano’s lawyers to Hochul seemed concerned about what would happen if the Court decided this case. In the worst-case scenario for immigrants, Trump could have gained the power to lock many people up for years without any meaningful way to challenge their detention. In the best case, the Supreme Court may have reached the same conclusion as the Second Circuit — but even that decision was vague about how long an immigrant must be detained before they must receive a bond hearing.
In any event, the bottom line is that the Court’s decision to dismiss the Black case is good news for Guerrero Mariano. But that dismissal merely delays a reckoning for other immigrants who face prolonged detention while their case is pending.

