The court’s ruling spelled major trouble for Visa and MasterCard. Under U.S. law, a competitor that has been damaged by the anticompetitive practices of dominant firms can recover triple the damages that actually occurred. Rivals Discover and American Express filed suits against Visa and MasterCard. In 2008, American Express reached an agreement with MasterCard for a settlement of $1.8 billion. That followed a 2007 settlement with Visa for $2.1 billion. Together, the two agreements represented the largest judgments in America’s antitrust history. Discover’s $6 billion suit was still pending in mid-2008.^[33] The government’s case against Visa and MasterCard illustrates one major theme of this chapter.

In this chapter we will examine some of the limits government imposes on the actions of private firms. The first part of the chapter considers the effort by the U.S. government to limit firms’ monopoly power and to encourage competition in the marketplace. The second part looks at those policies in the context of the global economy. We will also examine efforts to modify antitrust policy to make the U.S. economy more competitive internationally. In the third part of the chapter we will consider other types of business regulation, including those that seek to enhance worker and consumer safety, as well as deregulation efforts over the last 30 years.