Public Health Nursing 2020 Congress aims to discover advances in Public Health and Nursing practice, Healthcare management and education in relation to health disparities. According to the World Health Organization (WHO), the United States spent more on health care per capita ($8,608), and more as percentage of its GDP 17.2%, than any other nation in 2011. Total U.S. spending on health care increased 5.3 percent last year – topping $3 trillion overall – health care funded by the federal government rose by 11.7 percent, to nearly $844 billion in 2014.