Context: On 9 February 2014, Swiss voters narrowly approved by 50.3% a ballot initiative launched by the national conservative Swiss People's Party (SVP/UDC) to restrict immigration, and thus reintroducing a quota system on the influx of foreigners. This initiative was mostly backed by rural (57.6% approvals), suburban (51.2% approvals), and isolated cities (51.3% approvals) of Switzerland as well as by a strong majority (69.2% approval) in the canton of Ticino, while metropolitan centres (58.5% rejection) and the French-speaking part (58.5% rejection) of Switzerland rather rejected it. Some news commentators claim that this proposal de facto contradicts the bilateral agreements on the free movement of persons from these respective countries.

Question: In February of 2014, what did Swiss voters narrowly approve to restrict?
Answer: immigration

Question: What was reintroduced on the influx of foreigners in February of 2014?
Answer: a quota system

Question: Which centres of Switzerland mostly rejected the quota system for foreigners?
Answer: metropolitan

Question: What was the rejection rate of the quota system by the French speaking part of Switzerland?
Answer: 58.5%

Question: What do some news commentators claim is violated by the restricted immigration proposal?
Answer: bilateral agreements on the free movement of persons