The same blank canvas as long as you don't peak under his kimono.
Obama had a radical past, associated with radicals, and had an unremarkable legislative career topped off by his staunch opposition to the Illinois version of the Born-Alive Infant Protection Act.
The media was unwilling to take a peak, or address any of these issues once they were known.
The media had not taken a look under Trump's kimono either, or address any of these issues once they were known.
They difference is, all of this will be put out once his opposition is Hillary. He will be eviscerated.
Maybe the media where you live doesn't bother, but what I've been reading and watching the media has made an all out assault on Trump and it's been on going for months. Every detail of his life from childhood, everything he has wrote, interviews from 30+ years ago, interviewing ex wives, ex workers, anyone who will say something negative, etc. Couple that with the millions of dollars in negative ads against him running 24/7. They even tried to blame him for the missed registration on one of his airplanes. I'm sure right now they are looking into every auto owned by a Trump company to make sure it's properly registered.