The White House on Wednesday formally requested the blocking of a tool that allows people to block ads from being viewed on their phones and tablets.
The White House is seeking to block the extension of the ad-blocker extension Adblock Plus, which was developed by Google and is used by millions of Americans to block advertisements from appearing on their mobile devices.
The extension blocks ads that can’t be removed through Google’s own tools, but the White House said the extension’s developer is also the company behind AdblockPlus.
The ad-busting tool was developed to allow users to opt-in to blocking ads on their smartphones and tablets, but it has been widely used by tech companies and marketers to block unwanted ads.
In a letter to the U.S. Patent and Trademark Office, the White Senate Office of Technology Policy wrote that the extension was not authorized under U.N. trade standards, and that the White Department would take the necessary steps to remove it from the marketplace.
The U.K.-based company behind the extension has not yet responded to a request for comment.
The tool allows users to enable “no-advertising” or “zero-advertising,” which would block ads that are not blocked by the developer of the extension.
In addition, users can choose whether or not to block ad blockers in their mobile apps, which are available in over 100 languages.
Adblock Plus is one of several ad-protection software that have been created by tech giants such as Google, Facebook and Microsoft in recent years to prevent ads from appearing when users open or visit their websites.
The tools block ads for users that use ad-supported browsers, and they block ads on websites that don’t have ad-tracking capabilities.
Google has also become an outspoken opponent of ad-buying programs, with Google saying in August that its Chrome browser would block ad-stealing ads in the future.