there‘s an additional aspect to this, which is explored in an insightful article by Sam Fowles on The Conversation.

He points out that although we don‘t know in detail what the US-EU TAFTA/TTIP agreement will contain, we do have the text for the one between Canada and the EU, the Comprehensive Economic and Trade Agreement (pdf), known as CETA. The European Commission has said many times that it aims to build on the corporate sovereignty chapter in CETA when it comes to negotiating TTIP.