BRUSSELS — The European Union's sweeping privacy reforms are off to a bad start. National governments want to shoot down a key legal change at the heart of the European Commission's proposal to reform the General Data Protection Regulation (GDPR), a document obtained by POLITICO showed. The document is the first official negotiating text weighing in on the issue — and it shows how contentious reforming the GDPR will be. The privacy law is seen as the "third rail" of European tech policy, and is