The DOJ will accuse Google of abusing its dominant position in search and search-advertising to elbow out rivals and disadvantage competitors. The government will allege that Google is violating antitrust law by paying billions of dollars to mobile-phone manufacturers to keep Google as their default search engine, according to the Journal.
The case will also reportedly claim that Google disadvantages competitors by preloading Google search to Android phones.
The case could potentially mean serious structural changes for Google, including a breakup. But it's likely to drag on for years – well past the Nov. 3 election.