proposed "internet tax". In terms of domestic legislation, Orbán's government implemented a flat tax on personal income. This tax is set at 16%. Orbán has called his government "pragmatic", citing restrictions on early retirement in the police force and military, making welfare more transparent, and a central banking law that "gives Hungary more independence from the European Central Bank". After the 2014 parliamentary election, Fidesz won a majority, garnering 133 of the 199 seats in the National Assembly. While he won a large majority, he garnered 44.54% of the national vote, down from 52.73% in 2010. During the 2015 European migrant crisis, Orbán ordered the erection of the Hungary–Serbia barrier to block entry of illegal immigrants so that Hungary could register all the migrants arriving from Serbia, which is the country's responsibility under the Dublin Regulation, a European Union law. Under Orbán, Hungary took numerous actions to combat illegal immigration and reduce refugee levels. In May 2020, the European Court of Justice ruled against Hungary's policy of migrant transit zones, which Orbán subsequently abolished while also tightening the country's asylum rules. Orbán questioned Nord Stream II, a new Russia–Germany natural gas pipeline. He said he wants to hear a "reasonable argument why South Stream was bad and Nord Stream is not". "South Stream" refers to the Balkan pipeline cancelled by Russia in December 2014 after obstacles from the EU. Since 2017, Hungary's relations with Ukraine rapidly deteriorated over the issue of the Hungarian minority in Ukraine. Orbán and his cabinet ministers repeatedly criticized Ukraine's 2017 education law, which makes Ukrainian the only language of education in state schools, and threatened to block further Ukraine's EU and NATO integration until it is modified or repealed. In the 2018 Hungarian parliamentary election, the Fidesz–KDNP alliance was victorious and preserved its two-thirds majority, with Orbán remaining prime minister. Orbán and Fidesz campaigned primarily on the issues of immigration and foreign meddling, and the election outcome was seen as a victory for right-wing populism in Europe. In July 2018, Orbán travelled to Turkey to attend the inauguration ceremony of re-elected Turkish President Recep Tayyip Erdoğan. In October 2018, Orbán said after talks with President Erdoğan in Budapest that "A stable Turkish government and a stable Turkey are a precondition for Hungary not to be endangered in any way due to overland migration." In April 2019, Orbán attended China's Belt and Road forum in Beijing,