If say President Trump stepped down, V.P. Pence would become President and he would name someone as V.P. and it wouldn't be Paul Ryan either, and it wouldn't be Hillary Clinton by any means, so what is it they are trying to do?
They don't like President Trump because he knew where all the bodies are buried BEFORE he took the Oath of Office and they know it...
Powerline has swung into action: http://www.powerlineblog.com/archives/2017/06/the-ap-runs-interference-for-comey-and-mueller.php