Which great society program continued to receive significant public and political support in the 21st century

Medicare

Explanation:

The Great Society programs were a series of programs that president Lyndon B. Johnson launched in the United States in 1964-65. These programs aimed to eliminate poverty and racial injustice. Although the programs' importance reduced during the years of the Vietnam War, some have continued to enjoy some popularity and funding, including Medicare.

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.