Non-EU workers and their relatives will have to prove knowledge of one of Switzerland's national languages if they want to stay in the country.

Immigration permits for non-European Union citizens will be harder to get in Switzerland, but the country will also have to improve its efforts to integrate the newly arrived. Those are the two main goals of the proposed new Immigration and Integration Act presented on Wednesday by the Federal Council, in agreement with the cantons.

"Switzerland can and should do more," Justice Minister Simonetta Sommaruga told reporters on Wednesday in Bern.

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