THE UK WILL NOT BE A SOVEREIGN STATE UNDER THIS EU WITHDRAWAL AGREEMENT 

If MP’s adopt this Withdrawal Agreement it will mean that during the implementation period ALL EU legislation will continue to apply. Not only that but any new or amended legislation will have to be implemented in the UK without any input or examination from UK representatives in the Brussels / Strasbourg process.

If there is no agreement for the future relationship between the UK / EU the terms of the Withdrawal Agreement will continue

We will not be able to negotiate Free Trade Agreements with Third countries and our ability to control immigration, our own taxes, defence and security policy. The UK will have a diminished role to play on the world stage as we will not be able to conclude any policy with external bodies or third countries without EU approval

Already EU legislation gets hardly any scrutiny by the HoC and HoL other than through their Select Committees. An EU Regulation cannot be amended in any way. A Directive has some flexibility but its main principle must the complied with otherwise the Court of Justice of the European Union will adjudicate it’s implementation

Any scrutiny of EU legislation is conducted in the Brussels and Strasbourg process by 751 elected MEPs, (sitting on a permanent basis), Council of Ministers civil servants in working groups and other consultative Institutions like the 350 appointed members of the European Economic and Social Committee (sitting on a permanent basis) and the 350 placed members of the European Committee of the Regions (meeting in 5-6 sessions each year

Under the terms of the Withdrawal Agreement there will be no participation from the UK in the Brussels / Strasbourg process but we will be tied in to implementing all legislation and Decisions of the EU even if we do not want to. Sovereignty State status gone

Future relationship between the UK / EU

To establish the future relationship between the UK / EU could take years, the EU does not have a good record of negotiating new Free Trade Agreements quickly. On top of that under the terms of the Withdrawal Agreement to actually exit the EU requires the UNANIMOUS agreement (permission) of all the member states of the EU. 

From what I read of the Attorney Generals opinion although the risk of being trapped in the EU has slightly reduced the overall concept is unchanged. Whilst negotiations continue possibly for years, based on precedent, the EU would claim they are not being unreasonable PLUS those wanting to Remain in the EU would continue to agitate to press that policy

The 5th largest world economy would require the unanimous permission of the EU 27 member states to LEAVE