Mashable: Regulators in the United States and Europe have been examining Google's enormous ad tech business.

The lawsuit headache for Big Tech does not appear to be going away, as regulators around the world tighten their observance and keep a close eye on the major big tech players around the world.

According to reports, the US Department of Justice is preparing to file an antitrust action against Google, alleging that the search giant unfairly dominates the digital advertising market. CNET says that Bloomberg reported on Monday, citing unnamed sources, that the case is likely to be filed in federal court before the end of the week.

The filing of the lawsuit comes as Congress, the DOJ, the EU, and the UK take steps to assert jurisdiction over big tech. The US Senate pushed for the American Innovation and Choice Online Act to limit how much power Amazon, Apple, and Google have in e-commerce markets.

Regulators in the United States and Europe have examined Google's enormous ad tech business. In an effort to settle an ongoing antitrust probe by the European Union without paying a huge punishment, Google reportedly proposed to enable third-party ad networks on YouTube. In Texas, a complaint says that Google's ad tech division hurts competitors by doing "false, fraudulent, or misleading activities."

It would be the second time the Justice Department has gone to court against Google's monopolization practices. In 2020, the Justice Department launched an antitrust case against the Alphabet-owned corporation for its claimed actions to stifle search industry competition and market dominance. The lawsuit is currently being processed by the legal system.

According to reports, Google has attempted to satisfy the department's concerns to prevent a new lawsuit. The company apparently informed the Department of Justice last year that it was willing to separate its advertising division.