And, frankly, there weren't any liberal sources of note.
You mentioned coverage by the Washington Post. I couldn't find such. Do you have a link to the WaPo story?
As an aside, Ross Coulthart, the Australian journalist who has been covering this story, has spoken loudly and boldly about the failure of major media in the U.S. in covering this story. He alleges they are under the thumb of the Pentagon or the CIA (i.e., if they cover this story positively, they will be kicked out of the respective press pools).
The same with the Hunter cocaine story. It's their wish to debate the details (where was it found, how did it get there, etc.) so that it's talked about longer and uses up bandwidth to make the bribery and stolen election (very real and very important issues) fade away from memory.