So the new charge is that one year, that great genius of business Donald Trump lost nearly a billion dollars and therefore was able to avoid paying federal income taxes for perhaps twenty years. Did he do this? They don't seem to be denying it too loudly and if he does, he may have to release all his tax forms to prove it. (The New York Times, meanwhile, is not saying that they don't have more of his to release.)
How is a rich person able to avoid taxes through losses? If you want to understand it, read this and this.
I kinda like the Trump camp's argument that if he did do this, we should elect him because he knows how to change the rules so other wealthy people can't get away without paying taxes. Hey, maybe we can stop all murders by electing Phil Spector.