As the Trump administration considers approving a proposed merger between two of the world’s largest advertising agencies, Omnicom Group and Interpublic Group, regulators may impose unusual conditions.

A proposed consent decree would prevent the merged company from boycotting platforms because of their political content by refusing to place their clients’ advertisements on them, according to two people briefed on the matter.

The restrictions being discussed by the Federal Trade Commission as part of its merger review are part of an effort by the Trump administration to use federal agencies to root out what it considers bias in corporate America against conservative voices and causes.

The two people said the terms of the merger review were not finalized and could change.

A spokesperson for the FTC declined to comment. Spokespeople for Omnicom and Interpublic did not have an immediate comment.

Omnicom and Interpublic announced their plans to combine in December, setting them up to create an advertising goliath that would generate around $25 billion in annual revenue. Analysts quickly questioned whether antitrust enforcers would approve the deal because it brings together two of the largest advertising agencies.

In May, the FTC opened an investigation into whether some advertisers and watchdog groups banded together to withhold advertising dollars from online platforms and websites with conservative bents.

Andrew Ferguson, the FTC’s chair, has said the spending pullbacks amount to illegal boycotts. Advertisers say they should have the freedom to spend their money as they wish.

Some advertisers and brands have not wanted to be associated with social networks that can be a breeding ground for violent, inaccurate and politically divisive content. Because of that, advertising firms sometimes withhold portions of their budgets from these platforms.