France issued an unusual rebuke to US Ambassador Charles Kushner and said he’ll be summoned to the foreign ministry, after President Donald Trump’s envoy to Paris accused French authorities of being lax on antisemitism.

Kushner’s allegations, made in a letter to French President Emmanuel Macron, are “unacceptable” and violate a convention that forbids foreign diplomats from interfering in the host country’s affairs, the foreign ministry said in a statement late Sunday.

Antisemitic incidents have risen in France, spurred by the Israeli military operation in Gaza that followed the Oct 7, 2023, assault and hostage-taking by Hamas militants in Israel. Targets in France have included the national Holocaust memorial, synagogues and a Jewish-owned restaurant, according to the US Holocaust Memorial Museum.

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In a Wall Street Journal op-ed article titled “A Letter to Emmanuel Macron,” Kushner said he was writing “out of deep concern over the dramatic rise of antisemitism in France and the lack of sufficient action by your government to confront it.”

“France firmly rejects these latest allegations,” the foreign ministry said in a statement. “They also fall short of the quality of the transatlantic partnership between France and the United States and of the trust that must prevail between allies.”

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Kushner is a real estate developer and the father of Trump’s son-in-law, Jared. He served more than a year in federal prison for crimes including tax evasion and witness tampering, but Trump later pardoned him in 2020.