Amazon Showdown Grinds on With First Antitrust Case in U.S.

Amazon.com Inc. was sued by the attorney general for Washington, D.C., for allegedly engaging in anticompetitive practices that have raised prices for consumers.

The antitrust lawsuit, the first to target Amazon in the U.S., opens a new front in the campaign against major U.S. tech companies and is the sixth such case filed in the last year by state and federal officials. Yet even with the prospect of more action on the way against the industry in general and Amazon in particular, the retailer’s shares recovered from a decline Tuesday on the news and rose on the day.

Attorney General ...