ABC News mum on key details of Biden-Stephanopoulos interview

ABC News is so far remaining quiet on whether it will commit to releasing the full, raw version of President Biden's sit-down on Friday with anchor George Stephanopoulos. 

Concerns about Biden’s age and viability have been at the forefront since last week’s alarming debate in which he repeatedly lost his train of thought mid-sentence, struggled to answer questions, and was widely criticized for sounding frail. While the White House called it a "bad night," a growing number of Democrats,...