Referendum on more powers for Welsh Assembly Government

When we had the last referendum on more powers being devolved to Wales the question included this statement, which had been agreed by both groups of politicians, AM's and MP's

"The Assembly cannot make laws on subject areas such as defence, tax or welfare benefits, whatever the result of this vote.".

Since then Ministers in both Westminster and Cardiff repeated that promise of asking the people again before more powers are devolved. That promise has been quietly dropped and so when more powers, such as tax raising powers, are allowed they won't be legitimately endorsed because there has been no opportunity to agree or reject them, another broken promise from politicians.