Simplify the following text for a Grade 15 native English-speaking person.
Original: His ideal drafts , presented to a secret session of the DÃ il during the Treaty Debates and publicised in January 1922 , were ingenious compromises but they included dominion status , the Treaty Ports , the fact of partition subject to veto by the parliament in Belfast , and some continuing status for the King as head of the Commonwealth .
Simplified: But at a secret session of the DÃ il during the Treaty Debates and publicised in January 1922 , his ideas for a treaty included dominion status , the ` Treaty Ports ' , a veto by the parliament in Belfast , and the king as head of the Commonwealth .