By an overwhelming majority, nurses at VA medical centers across the country have ratified their contract, an agreement that protects patient care standards and strengthens the voice of RNs in the care of the nation’s veterans. Tonight’s vote at Buffalo VA Medical Center was the final of 22 VA medical centers wins, where RNs are represented by National Nurses United (NNU), the largest union and professional association of registered nurses in the country, with 185,000 members.