The Government is proposing to amend the Constitution to allow for major future changes to EU rules, including the abolition of the national veto in almost all areas of policy over which the EU currently has power, to be made without a referendum.
Under the proposal, voters would be asked in the forthcoming referendum on the EU Constitution to give the Government freedom to sign up in the future to a wide range of such changes as long as they get the approval of the Oireachtas.
This would fireproof future changes made without referendum - including contentious moves such as the appointment of a European public prosecutor - from constitutional challenge.
The Taoiseach, Minister for Foreign Affairs, Attorney General and senior Government officials have briefed the Fine Gael and Labour party leaders on these proposals in recent weeks.
Their response is not yet known, although the Government is believed to be open to considering alterations to the plan.
The Government's draft, which has been seen by The Irish Times, if approved, would allow the State to agree in future to give up the national veto and extend the practice of majority voting in the areas of common foreign and security policy, EU financing, social policy, environment policy and family law.
It would also allow the extension of majority voting - replacing the existing requirement for unanimity - in the areas of criminal law, currently the subject of EU legislation.
It explicitly allows for the State to agree, for example, to the creation of a European public prosecutor, a development which has been strongly opposed by Minister for Justice Michael McDowell.
Mr McDowell has said this proposal is part of the agenda of a "small but well positioned group of integrationists" which would undermine the common law system in Ireland and the UK.
It also allows for a future decision for Ireland to participate in "permanent structured co-operation" in defence.
This would permit EU states to act together on military operations, but Ireland would retain the right to opt in or out of any such missions.
The most sweeping proposal is to seek approval to sign up to a clause in the EU treaty - known as a passerelle clause. This would allow the 25 EU leaders to agree that almost all matters currently governed by unanimity can be decided by qualified majority in the future.
These exclude taxation and the issue of a common defence, but include economic and monetary policy, criminal justice, immigration, education, industry, culture and a variety of other policy areas.