"WE THE PEOPLE" Popular sovereignty or the authority of the people referenced in the Preamble of the Constitution - This principle states that government power comes from the consent of the governed (the citizens). One is example of popular sovereignty is the election of representatives and senators in which the citizens hold the vote to elect the legislatures the citizens favor.
The Economic Opportunity Act was created to address poverty. Although it should be noted that some aspects of the Act were indirectly focussed on health as well.