European Union Bill

I am grateful to my hon. Friend for drawing the House's attention to this crucial matter. As I understand it, he, like many of us, rightly wants to reassert the sovereignty of Parliament and make it clear that Parliament remains sovereign in all circumstances, and as I understand it, those on the Treasury Bench have the same aim. Given that his proposal seems to be stronger in this regard, can he think of any good reason why they should refuse it?