"[European Union's chief Brexit negotiator Michel] Barnier wants British people and Europeans to keep the same rights and the same level of protection they currently enjoy under European law… The UK response came three weeks later. It was a damp squib, proposing that Europeans obtain the status of 'third-country nationals' in the UK, with fewer rights than British citizens are offered throughout the EU… The European parliament will reserve its right to reject any agreement that treats EU citizens, regardless of their nationality, less favourably than they are at present," Verhofstadt wrote in an open letter published by The Guardian newspaper on Sunday.
One of the important issues in the negotiation is whether the European Court of Justice (ECJ) should be allowed to oversee the rights of the EU citizens, who are living in the United Kingdom, after the latter's withdrawal from the bloc. May opposed the bloc's position that those rights should be upheld by the European Court of Justice, saying they will be subject to UK law.
Brexit negotiations between the United Kingdom and the European Union officially kicked off on June 19.