Immigration, Asylum and Nationality Bill

I want to raise a point in relation to what the noble Baroness has just said in response to Amendment No. 22. We have a new situation since the introduction of civil partnerships. How do the Government anticipate defining such relationships in terms of all the different nationalities who may apply? Presumably the legal position on partnerships is changing in a number of countries. Given that, the definition may be quite difficult. I note that all this is to be done by the negative resolution procedure, but that the Delegated Powers and Regulatory Reform Committee agrees because that was the way it was done in the existing legislation. All that is fine, but in order to ensure real flexibility, I wonder whether the Government should not find a way for Parliament to question whether some people are being left out. It is a pretty big thing if someone is not allowed an appeal because they fall outside these categories. Have the Government faced that possibility and considered how they will deal with it?