The latest proposed legislation on nongovernmental organizations follows the passage of a 2017 law that imposed burdensome reporting requirements on Hungarian human rights and civil society groups receiving funding from overseas.
Patrick Gaspard, president of the Open Society Foundations, said on Tuesday that Budapest had "denigrated and misrepresented" the organization's work and repressed civil society "for the sake of political gain".
"The so-called Stop Soros package of laws is only the latest in a series of such attempts".
'It has become impossible to protect the security of our operations and our staff in Hungary, ' Open Society Foundations said.
Facebook faces class action lawsuit for Android call and message data scraping
Reuters reports that the social network took the step after identifying apps which had access to 'large quantities of user data'.
Since opening his first foundation in Hungary in 1984, the Budapest-born Mr Soros has spent hundreds of millions of euro in the country on everything from photocopiers for independent media, to milk for schoolchildren and a clean-up operation after a 2010 toxic sludge disaster.
Orban has accused Soros of being a part of a technique to flood Europe with migrants and of meddling in home affairs. Open Society Foundations said Tuesday that it would seek legal routes to challenge the new legislation. It would also introduce a 25 percent tax on foreign donations to NGOs that support migration.
According to a spokesperson for OSF, the organization will continue to operate in Hungary, supporting local groups doing work on fundamental rights advocacy. Zovacs studied at the Central European University, a school Soros helped fund.
The representative of the Hungarian government, zoltán kovács, declined to comment.
"I just want to mention two principles, in which I believe we have agreement".