“This proposal is an encouraging and effective method of educating people of all backgrounds about the Nazi attempt to wipe out the entire Jewish population of Europe and the dangers such hatred can yield,” Ronald S. Lauder, the organization’s president, said in an emailed response to a request for comment.

“More than any other country, Germany has faced up to the crimes of its past in an honest and straightforward way, and has made it clear at the highest levels of government that the memory of the Holocaust must never be forgotten or diminished,” Mr. Lauder said.

The idea of requiring new arrivals to visit concentration camps was not universally endorsed. Some scholars of German history described it as a simplistic answer to a more complicated and insidious problem. Many acts of anti-Semitism in Germany, they emphasized, are not by immigrants.

“You don’t stop someone from being a racist or xenophobe by taking them to a concentration camp,” said Sabine von Mering, the director of the Center for German and European Studies at Brandeis University in Waltham, Mass. “I don’t think that making it a requirement is somehow going to magically solve this problem. It requires a lot more attention and education.”

Ms. Chebli, who suggested the required visits in an interview published Sunday in the newspaper Bild am Sonntag, was not immediately available for comment. Nor was it clear whether the German government would move to make such visits mandatory for immigrants, who are currently offered courses on German language, culture and history.