CNN:

Facebook (FB) has allowed political advertisers to target hundreds of misleading ads about Joe Biden and the US Postal Service to swing-state voters ranging from Florida to Wisconsin in recent weeks, in an apparent failure to enforce its own platform rules less than two months before Election Day.

The ads containing false or misleading information, primarily by a pro-Republican super PAC led by former Trump administration officials, have collectively been viewed more than 10 million times and some of the ads remain active on the service, according to an analysis of Facebook’s ad transparency data by the activist group Avaaz.

Two super PACs emerged as the worst offenders in Avaaz’s analysis: the pro-Trump group America First Action, and the pro-Democratic group Stop Republicans. But the report found that AFA’s activities far exceeded those of Stop Republicans, both in terms of money spent and impressions received.

While Facebook allows politicians to make false claims in their ads — arguing that voters deserve an unfiltered view of what candidates and elected officials say — advertisements by super PACs and other independent groups are subject to the company’s policies on misinformation.