European Union Bill

I certainly understand the thrust of the argument. Is it not the case that any future treaty revision will be constrained by the understanding that there would be a referendum in the United Kingdom that it would be impossible to win? Would not that, in itself, exert a powerful discipline on the development of the European Union, in that it would need to either curtail its ambition or, more importantly, make an accommodation with the British people and the British Government that was more in line with what we thought we had joined in 1975?