The European Commission is taking Hungary’s right-wing government to court over laws that could allow the authorities to investigate and prosecute people accused of undermining the country’s sovereignty.

Hungarian Prime Minister Viktor Orbán has long been accused of strangling off funds that go to his critics and opponents. The European Commission is suing to block a new Orbán law targeting outside money.

Hungary faces another fight at the European Union’s top court, this time over controversial sovereignty-protection legislation the EU’s executive sees as a violation of citizens’ fundamental rights.