http://www.dailykos.com/story/2015/06/10/1392061/-Killing-Medicare-on-back-burner-as-Paul-Ryan-pushes-tax-reform
"A key problem Republicans face with any new Paul Ryan plan is that voters know a little too much about the last Paul Ryan plan, and don't like what they know. Sure, this time it will include big promises of tax cuts (bigger for rich people than for you, but Republicans will have a talking point to obscure that), but you can confidently expect Democrats to remind voters—correctly!—that this is a plan coming from a guy whose end game is privatizing Medicare and Social Security."
