Sen. John Fetterman is warning that New York City Mayor Zohran Mamdani may be steering Democrats into dangerous territory after Mamdani vowed to reject a Supreme Court immigration ruling tied to President Donald Trump’s authority over Temporary Protected Status.
The Pennsylvania Democrat said Saturday that his own party once sounded the alarm over a possible “constitutional crisis” under Trump. However, he argued those same voices have gone quiet now that Mamdani has openly challenged the nation’s highest court.
“I haven’t seen the freak-out now that the mayor of New York is now saying I’m going to defy the Supreme Court ruling,” Fetterman said.
Fetterman Calls Out Democratic Silence
Fetterman’s criticism cut directly at what he sees as a glaring double standard inside the Democratic Party.
For months, many Democrats warned that Trump could trigger a “constitutional crisis” if his administration ignored court rulings. Fetterman said he pushed back on those fears at the time because, in his view, the administration had not crossed that line.
Now, he says Mamdani’s words deserve the same level of outrage.
“Many of the members in my party are not calling him [Mamdani] out… [or they are] defend[ing] him, or just say[ing] we really actually have to follow the court rulings because… that’s a constitutional crisis, when you have the leader of the country’s largest city [saying] we’re not going to follow or honor what the Supreme Court says.”
That is the heart of Fetterman’s warning. It is not just about immigration policy. It is about whether elected officials can pick and choose which court rulings they will respect.
Supreme Court Hands Trump Immigration Wins

The dispute follows two major Supreme Court decisions connected to Trump’s immigration agenda.
In one case, Mullin v. Al Otro Lado, the court ruled that migrants turned away at the border before entering the United States do not have the right to apply for asylum.
Meanwhile, in Mullin v. Doe, the court ruled that Haitian and Syrian nationals with Temporary Protected Status could not receive judicial relief delaying the revocation of their status while they continue challenging the administration in court.
Together, the rulings gave the Trump administration broader room to limit asylum claims and move ahead with ending temporary protections for certain migrants already living in the United States.
Mamdani Says He Will Not Accept Ruling
Mamdani responded sharply to the TPS decision, saying the ruling was not something his administration “will ever accept.”
He also said he was ready to face “any consequences” for defying Trump’s immigration enforcement agenda in New York City.
That statement placed him in direct conflict with Fetterman, who has increasingly warned Democrats against embracing far-left figures and policies that he believes could hurt the party nationally.
A Broader Fight Inside The Democratic Party
The Fetterman Mamdani dispute lands at a tense moment for Democrats.
Progressive candidates in several major cities and states have drawn attention for bold left-wing platforms, sparking debate over where the party is heading. Some Democrats see that energy as the future. Others, including Fetterman, appear deeply concerned that it could push the party too far from mainstream voters.
Still, the immediate question is simple: when a mayor says he will not accept a Supreme Court ruling, should Democrats call that out?
Fetterman’s answer is clear. For him, defying the Supreme Court is not a protest tactic. It is a “constitutional crisis.”



