The US is pushing for a dangerously broad definition of a criminal violation of copyright, where even noncommercial activities could get people convicted of a crime. The leak also shows that Canada has opposed this definition. Canada supports language in which criminal remedies would only apply to cases where someone infringed explicitly for commercial purposes.
This distinction is crucial. Commercial infringement, where an infringer sells unauthorized copies of content for financial gain, is and should be a crime. But that‘s not what the US is pushing for—it‘s trying to get language passed in TPP that would make a criminal out of anyone who simply shares or otherwise makes available copyrighted works on a “commercial scale.”