Acting Attorney General Todd Blanche sent a formal letter to the president of the International Criminal Court declaring that the Justice Department "unequivocally rejects" the tribunal's jurisdiction over American citizens, and warning that Washington will refuse to cooperate with any ICC investigation, extradition request, or proceeding involving U.S. nationals.

The letter, addressed to ICC President Judge Tomoko Akane and made public by the DOJ on Thursday, marks the sharpest formal confrontation yet between the Trump administration and the Hague-based court. It converts months of executive sanctions into a blunt, on-the-record legal position: the ICC has no lawful claim over Americans, and the United States will use every tool at its disposal to ensure none are ever detained under its warrants.

For an administration that has clashed with courts at every level, domestic and now international, the letter reads less like diplomatic correspondence and more like a cease-and-desist notice backed by federal statute.

What the letter says

Blanche's letter lays out the DOJ's position in unsparing terms. He told Judge Akane that the ICC "has acted in an increasingly lawless and illegitimate manner," asserting authority over nations that never consented to its jurisdiction and failing to defer to national courts. He described the court's investigations as "driven as much by political pressure and institutional self-interest as by legal merit."

The acting attorney general cited two pillars of legal authority. The first is the 2002 American Servicemembers' Protection Act, which rejects ICC jurisdiction over Americans and authorizes the president to use "all means necessary and appropriate" to secure the release of any American detained under a court warrant. The law covers service members, government officials, and civilians alike.

Blanche warned that the statute's provisions "will be taken seriously and, if required, fully exercised to protect our people." He added that if any American is detained under an ICC warrant, the government "will take all necessary measures to secure that individual's immediate release."

The second pillar is President Trump's February 2025 sanctions order, which declared the ICC's conduct an "unusual and extraordinary threat" to U.S. national security and foreign policy. That order authorized asset freezes and travel restrictions on court officials and anyone who materially assists ICC investigations targeting Americans or other protected persons.

Sanctions already biting

The letter did not arrive in a vacuum. The Trump administration has already imposed sanctions on at least nine ICC officials since 2025, a campaign that has provoked a legal counterattack from the court's own bench.

In late June, three sitting ICC judges, including Kimberly Prost of Canada, filed a federal lawsuit against the Trump administration in the Southern District of New York. The judges argue the sanctions exceed the president's authority under the International Emergency Economic Powers Act and violate the Fifth Amendment. Their suit seeks to strike the sanctions order and unfreeze their assets.

That lawsuit sets up a direct collision between executive power and international judicial independence, fought, notably, in an American courtroom. The administration has shown no sign of backing down.

The pattern is familiar. Domestically, the Trump DOJ has pursued aggressive enforcement actions that have drawn court challenges at multiple levels, from appeals courts blocking ICE detention policies to disputes over birthright citizenship.

Why the ICC draws conservative fire

The International Criminal Court has been a target of bipartisan skepticism in Washington for more than two decades. The United States never ratified the Rome Statute that created the court in 2002, and both Democratic and Republican administrations have kept it at arm's length. But the Trump administration's posture goes further than any predecessor's, moving from passive non-cooperation to active financial punishment of the court's personnel.

Blanche's letter made clear the administration views the ICC's track record with deep suspicion. He wrote that the court's conduct raises "serious doubts about the ICC's impartiality, credibility, and legitimacy."

Part of the friction involves the ICC's pending matters that touch American interests. The court has a narrowed investigation related to Afghanistan that could implicate U.S. personnel, though the current status of that probe is unclear. The ICC also issued arrest warrants for Israeli Prime Minister Benjamin Netanyahu and former Israeli Defense Minister Yoav Gallant related to the Israel-Hamas war, a move that drew bipartisan condemnation in Congress.

Blanche quoted Trump's February 2025 sanctions order directly: the United States "unequivocally opposes and expects our allies to oppose any ICC actions against the United States, Israel, or any other ally of the United States that has not consented to ICC jurisdiction." The message extends the shield beyond American citizens to allied nations, a significant expansion of the stated policy.

The DOJ has also been active on other fronts where executive authority meets legal resistance. The department recently moved to prosecute birth tourism fraud after the Supreme Court rejected a birthright citizenship order, demonstrating its willingness to find alternative enforcement paths when courts block a preferred route.

No warrants yet, but a preemptive wall

One detail worth noting: the ICC currently has no arrest warrants outstanding against any U.S. official. Blanche's letter is preemptive. It draws a line before one is crossed, rather than responding to an active threat.

That preemptive posture is the point. The administration is telling the Hague that any future move toward American citizens will be met not with diplomatic protests but with the full weight of federal law, including a statute that, on its face, authorizes the president to extract detained Americans by any means necessary.

Whether the ICC takes the warning seriously is another matter. The court has historically operated on the assumption that its jurisdiction extends wherever the Rome Statute's signatories allow, regardless of whether the accused's home country consented. The United States has never accepted that theory, and Blanche's letter makes the rejection as formal and explicit as it has ever been.

The broader context includes a domestic legal landscape where executive enforcement actions face constant judicial pushback. Courts have rejected politically charged appeals in cases involving Trump allies, while progressive lawmakers in some states have pushed legislation that would expose federal agents to personal liability for carrying out enforcement duties.

The legal collision ahead

The ICC judges' lawsuit in the Southern District of New York will test whether American courts view the sanctions as a lawful exercise of presidential authority or an overreach. The judges' argument, that the International Emergency Economic Powers Act does not authorize punishing members of an international tribunal for doing their jobs, has not yet been tested at this scale.

If the court sides with the ICC judges, the administration would face a rare scenario: an American federal judge ordering the rollback of sanctions designed to shield Americans from a foreign court's reach. If the administration prevails, the sanctions regime becomes a permanent deterrent against any ICC action touching U.S. interests.

Either way, the Blanche letter locks in the DOJ's institutional position. Future administrations could reverse it, but doing so would require an affirmative decision to cooperate with a court that the current Justice Department has formally labeled illegitimate.

The administration's willingness to confront international institutions mirrors its approach at home, where it has used executive power to push back against prosecutorial overreach in cases it views as politically motivated.

What remains unanswered

Several questions remain open. The ICC has not publicly responded to Blanche's letter. The identities of all nine sanctioned ICC officials have not been fully detailed. And the status of the court's Afghanistan-related investigation, the probe most likely to directly affect American personnel, remains unclear.

What is clear is the trajectory. The Trump administration has moved from executive orders to financial sanctions to a formal DOJ letter rejecting the court's very legitimacy. Each step has raised the stakes. The next move belongs to the Hague, or to the federal judge in Manhattan who will decide whether American law permits the president to sanction international judges for asserting jurisdiction the United States never accepted.

A country that won't submit its citizens to a court it never joined isn't defying international law. It's enforcing its own.