The Justice Department is expected to file its long-awaited antitrust lawsuit against Google later today, according to a report from The Wall Street Journal. In the suit, the Justice Department is expected to argue that Google used anticompetitive practices to safeguard its monopoly position as the dominant force in search and search-advertising, which sit at the foundation of the company’s extensive advertising, data mining, video distribution, and information services conglomerate. It would be the first significant legal challenge that Google has faced from U.S.