Cable news, especially of the Fox variant, is all-VA, all the time. Fox is almost as bad as their Missing Jet News Network rival on that over-focus.
There doesn't seem to be much being done other than "Oh, isn't this terrible?" and the standard asking for the cabinet secretary's head. As I was writing this, President Obama got out the silver platter and delivered up the cranium of Eric Shinseki as a sacrifice to the body politic.
Actually doing something would require policy changes that neither side would like.
It might require spending more money on VA doctors. If they're a waiting list a mile long, then you have demand outstripping supply and you need to increase supply ... unless you want to have the vets die off and reduce demand the hard way. No, even the current administration, which isn't all that pro-military, isn't that callous.
One option that would give a quick fix is to allow regular civilian doctors pick up the slack and have the VA pay them. That might cost more money that Republicans might like and have the Democrats have to privatize veteran health care when they trying to hang on to their ACA gains.
The Watergate classic comes to mind-what did "they" know and when did "they" know it? Some of this might well have been systemic and below political radar, but the system didn't work somehow; these waiting lists weren't brought to light sooner.