France summoned U.S. Ambassador Charles Kushner on Sunday after he accused Paris of failing to adequately address antisemitic violence in a letter to President Emmanuel Macron, according to a French Foreign Ministry spokesperson.

Kushner, who is Jewish and whose son is married to U.S. President Donald Trump's daughter, published the open letter in the Wall Street Journal amid deep divides between France and the U.S. and Israel.

In the letter, he urged French President Emmanuel Macron to more urgently enforce hate-crime laws and tone down criticism of Israel, saying French government statements about recognizing a Palestinian state have fueled antisemitic incidents in France.

"France has learned of the allegations made by the United States Ambassador, Mr. Charles Kushner, who, in a letter to the President of the Republic, expressed his concern about the rise in antisemitic acts in France and noted the alleged lack of sufficient action by the French authorities to combat them," the ministry said.

"The Ambassador's allegations are unacceptable," the ministry said, adding that Kushner would be due to appear on Monday.