This is from an advocacy group.

RNs across the United States are actively working with CNA/NNU to win their own mandated direct-care RN-to-patient staffing ratios. RNs in other countries have also been fighting to win RN-to-patient staffing ratios to improve conditions for their patients. Safe RN-to-patient staffing ratios have been proven to save lives, yet under-staffing is a major issue that RNs struggle with every day. We are ready to change that.

Source: National Campaign for Safe RN-to-Patient Staffing Ratios | National Nurses United