European Union (Amendment) Bill

When all the politics is cut aside, is it not clear that the main difference between the constitution and this treaty, which has been recognised by other EU countries, is that the constitution brought together previous treaties and bound them as a document, which would then have been amendable as the constitution of the EU; whereas this treaty is in exactly the same legal position as previous treaties such as Amsterdam and Nice and has much less of a radical impact than the Maastricht treaty?