Answer:
They gather the specific information they will present to legislators in order to influence public health policy in one way or another. In short, an interest group works in a conscientious and informed manner for as long as necessary to have a diverse and well-informed argument that can influence public health policy.
Step-by-step explanation:
Are examples of public interest groups.
ABA Commission on Homelessness and Poverty.
AIDS Policy Center for Children, Youth, and Families.
Affordable Housing Industry Information.
American Association of People with Disabilities.
American Association of Retired Persons.
American Consulting Engineers Council.
American Enterprise Institute for Public Policy Research.
And they all are very helpful for American citizens.