Skip to ContentGo to accessibility page
OpenStax Logo
American Government 4e

Introduction

American Government 4eIntroduction
Figure 10.1 On April 15 (or “tax day”), 2010, members of the Tea Party movement rallied at the Minnesota State Capitol in St. Paul in favor of smaller government and against the Affordable Care Act (left). Two years later, supporters of the law (right) demonstrated in front of the U.S. Supreme Court during oral arguments in National Federation of Independent Business v. Sebelius, in which the Court eventually upheld most provisions of the law. (credit left: modification of work by “Fibonacci Blue”/Flickr; credit right: modification of work by LaDawna Howard)

Chapter Outline

Introduction

The 2010 Patient Protection and Affordable Care Act (ACA), also known as Obamacare, represented a substantial overhaul of the U.S. healthcare system.1 Given its potential impact, interest group representatives (lobbyists) from the insurance industry, hospitals, medical device manufacturers, and organizations representing doctors, patients, and employers all tried to influence what the law would look like and the way it would operate. Ordinary people took to the streets to voice their opinion (Figure 10.1). Some state governors sued to prevent a requirement in the law that their states expand Medicaid coverage. A number of interest groups challenged the law in court, where two Supreme Court decisions have left it largely intact.

Interest groups like those for and against the ACA play a fundamental role in representing individuals, corporate interests, and the public before the government. They help inform the public and lawmakers about issues, monitor government actions, and promote policies that benefit their interests, using all three branches of government at the federal, state, and local levels.

In this chapter, we answer several key questions about interest groups. What are they, and why and how do they form? How do they provide avenues for political participation? Why are some groups advantaged by the lobbying of government representatives, while others are disadvantaged? Finally, how do interest groups try to achieve their objectives, and how are they regulated?

PreviousNext
Order a print copy
Citation/Attribution
Reuse and redistribution of this content in digital or print format:
  • This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's prior written permission.
  • This book uses the Creative Commons Attribution-NonCommercial-ShareAlike License, which means that you can reuse and modify the material only for noncommercial purposes, must attribute OpenStax, and must distribute any derivative works under the same license.
  • Any commercial printing of this textbook, including using a local or custom printer, must be approved by OpenStax, and proper citation provided.
  • OpenStax-copyrighted images, activities, assessments, and similar components of this book are subject to the same licensing – CC-BY-NC-SA. They can be used for noncommercial purposes with attribution. Commercial use requires permission.
  • Permission requests: Anyone who intends to incorporate this content (including text, images, and other components) into large language models, use it in AI offerings, use it commercially (including in print), and/or has questions about another use case is welcome to complete our reuse request form.
Attribution information
  • If you are redistributing all or part of this book in a noncommercial print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/american-government-4e/pages/1-introduction

  • If you are redistributing all or part of this book in a noncommercial digital format, then for every page that includes OpenStax content, you must license the derivative work under the same CC-BY-NC-SA license as the original, and include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/american-government-4e/pages/1-introduction

Citation information

The information below includes the information needed to generate citations in most major styles (APA, MLA, etc.); you must reformat and organize the information as needed to fit the requirements of the style. Use the information below to generate a citation. We recommend using a citation tool such as this one.

© Apr 23, 2026 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo, and Rice University name, and Rice University logo trademarks, or wordmarks are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.