The purpose of an interest group is to seek collective goods and to influence public policies. The system is created as a tool of public influence that actively attempts to influence the behavior of different political decision makers. In many cases, they are often called pressure groups because of their effort to apply pressure to push forward their agenda. Interest groups are both large and small, and they try to promote their membership by including special services such as health and life insurance. There are various types of interest groups who exercise their constitutional rights to persuade public officials. One of the largest categories, economic interest groups advocates for the financial interest and benefits of their members. Other
