Comment from Theresa May
Proposed Canada-style trade deal would break up UK
Priority in negotiations is protecting unity of UK
Parliament will be given a clear choice of whether to support Brexit deal
It is up to the EU to say what their concerns with UK Brexit plan are
We need to see EU counter proposals
May seems to be fighting against EU offers to allow Northern Ireland to basically keep its borders open with the EU and trade like before, while forcing Britain into a new deal. She frames it as a sovereignty issue but it sounds like the EU is trying to offer something constructive.