France has summoned the U.S. ambassador to Paris after the diplomat, Charles Kushner, wrote a letter to French President Emmanuel Macron alleging the country did not do enough to combat antisemitism. France's foreign ministry issued a statement Sunday announcing it had summoned Kushner to appear Monday at Quai d'Orsay, the French Ministry for Europe and Foreign Affairs, and that his allegations "are unacceptable." "France firmly rejects these allegations," the statement obtained by CBS News said. "The rise in antisemitic acts in France since October 7, 2023, is a reality we deeply regret and against which the French authorities are fully...