For Trump (and Republicans in general), America's political journalists consistently normalize lies, corruption, racism, misogyny, and blatantly obvious mental confusion. If it's covered as a story, it's a one-day story and everyone moves on.
But Big Journalism rakes Biden and prominent Democrats over the coals when they violate any one of those norms -- in "news" eruptions that go on and on.
This isn't a media blind spot. The only logical explanation at this point is that it's willful.