The treaty provided for the preservation of their ethnic, cultural, linguistic, and religious identities; education at all levels in the mother tongue; and the ethnic Hungarians' participation in local authorities charged with minority affairs. It is quite common among the Hungarian minority in Ukraine holds besides Ukrainian citizenship also Hungarian citizenship, although currently Ukrainian law does not recognise dual citizenship. In the 2014 European Parliament election in Hungary Andrea Bocskor who lives in Ukraine (in the city Berehove) was elected into the European Parliament (for Fidesz). Hence, Bocskor, who is ethnically Hungarian and a citizen of Hungary, became the first elected member of the European Parliament who additionally holds a Ukrainian passport. Since 2017, the Hungary–Ukraine relations rapidly deteriorated over the issue of Ukraine's education law. Ukraine's 2017 education law makes Ukrainian the required language of primary education in state schools. László Brenzovics, the only ethnic Hungarian in the Supreme Council of Ukraine, said that "There is a sort of purposeful policy, which besides narrowing the rights of all minorities, tries to portray the Hungarian minority as the enemy in Ukrainian public opinion." Residents in seven of Mukachivskyi Raion's villages have the option to learn the Hungarian language in a school or home school environment. The first Hungarian College in Ukraine is in Berehovo, the II. Rákoczi Ferenc College. Currently there are 71 Hungarian Schools in Ukraine with 16,000 enrolled students. The Hungarian Democratic Federation in Ukraine (UMDSZ) is the only nationally registered Hungarian organization. It was established in October 1991 by the Hungarian Cultural Federation in Transcarpathia (KMKSZ, which has suspended its membership since 1995), the Cultural Federation of Hungarians in Lviv, and the Association of Hungarians in Kiev. The Hungarian Cultural Federation in Transcarpathia is associated with the political party KMKSZ – Hungarian Party in Ukraine, which was established in February 2005. In March 2005, the Ukrainian Ministry of Justice also registered the Hungarian Democratic Party in Ukraine upon the initiative of the UMDSZ. Also Zoltán Lengyel was elected as mayor of Mukachevo after the election on 1 December 2008. UMDSZ also won city municipalities of Berehove, Vynohradiv and Tiachiv in this election. The following data is according to the Ukrainian census of 2001. Hungarian cultural heritage in Ukraine includes medieval castles: