He is not backing anyone. I seriously doubt he will vote for anyone but Trump. He is just staying out the public view on it. See my other post to you on this....his endorsement may not be a plus for Trump here in Michigan.
Here's the group that coordinated the protests today --> protesting Trump's stance on sexual harassment, auto jobs pic.twitter.com/fqogY1jsV1— Ali Vitali (@alivitali) August 8, 2016