Where it says: "Recently, there have been reports that Apple News has systematically promoted news articles from left-wing news outlets and suppressed news articles from more conservative publications. Indeed, multiple studies have found that in recent months Apple News has chosen not to feature a single article from an American conservative-leaning news source, while simultaneously promoting hundreds of articles from liberal publications."

... referring to this "research":

https://mrcfreespeechamerica.org/blogs/free-speech/heather-m...