So far as I can see the only thing he's really in "trouble" for is not telling some people in the press what happened the way they say he should have. In that regard he is not in any trouble at all. He does not owe them any explanation. Now, if it was Cheney that was shot that would be a different matter.
My goodness folks, he accidently shot someone with some bird shot. What's the big deal?
The big deal is that the MSM is salivating for a big name GOP pol that they can tear down.
1. The Vice President shot someone. That's big.
2. The victim is having medical probelms. That's bigger.
3. If he dies within the year as a result (and now any cardio problem will be seem as a proximate cause), Dick Cheney can actually face involuntary manslaughter charges and jail time. That would be orgasmic for the MSM, and tough for the GOP to claim that the law should not apply to the elites (that's for the Dems and MSM to declare.)