Germany’s main Jewish leader has given a guarded welcome to a politician’s suggestion that everyone living in Germany, including migrants, should be obliged to visit a former Nazi concentration camp at least once.

The suggestion by Sawsan Chebli, a Berlin city government official who is Muslim, came amid concern over anti-Semitism among migrants from Muslim-majority countries. She told Sunday’s Bild am Sonntag newspaper that concentration camp visits should become part of integration courses for migrants.

Josef Schuster, the head of Germany’s Central Council of Jews, told Deutschlandfunk radio Wednesday the idea is “good in principle” but there are questions over details. He said it wouldn’t work simply to summon people to concentration camp visits.

Schuster said well-prepared visits would be “absolutely important” for older schoolchildren and for asylum-seekers.

The suggestion comes as Germany’s ruling parties are preparing legislation that could see migrants who express anti-Semitic views deported from the country, the daily Die Welt newspaper reported Saturday.

The CDU-CSU conservative alliance led by Chancellor Angela Merkel hopes to present the new bill by International Holocaust Remembrance Day on January 27.

The draft legislation states that “absolute acceptance of Jewish life” is a “benchmark for successful integration” in Germany.

“Anyone who rejects Jewish life in Germany or questions Israel’s right to exist can not have a place in our country.”

Stephan Harbarth, deputy chairman of the CDU-CSU parliamentary group, told Die Welt that Berlin “must resolutely oppose the anti-Semitism of migrants with an Arab background and from African countries.”

Migrants found guilty of anti-Semitic speech could face deportation under the bill.

German officials reacted with outrage in December after protesters in Berlin burned Israeli flags to protest the US decision to recognize Jerusalem as the Israeli capital.

Interior Minister Thomas de Maiziere said Germany should appoint an anti-Semitism commissioner to counter growing hate speech against Jews and Israel from both its homegrown far right and the immigrant community.

Read More: Times of Israel