Your question seems to echo the same red herrings GOP leadership is pushing. Imagine if Obama came out in the last days of our election and made this public without McConnell and GOP leaders backing him up. What would have happened? I think it's safe to say that Trump backers would have accused Obama of meddling to support his preferred candidate. Mitch McConnell was asked to join Obama and Reid in releasing the info - he steadfastly refused. 

Of course, this is ALL Obama's fault. Why wouldn't it be? SMH.