I have a very close relative who was running his Presidential campaign.I kept a very close on the events surrounding Kasich at the time. There was NO scandal whatsoever. He was also the reliable conservative in the primaries, especially since GWB had bashed California's Prop 187.
I don't think Kasich made it to the primaries. If I recall, all left were Bush, McCain, Forbes, Keyes, Bauer and Hatch.