They also agreed that considerable actions have been taken and/or proposed towards achieving those objectives, but that having the right people and stakeholders involved was critical to successfully achieve and effectively maintain the necessary reforms.
They took actions in hopes of achieving a more strict tax system. 
mnli hypothesis: They took actions in hopes of achieving a more strict tax system.  premise: They also agreed that considerable actions have been taken and/or proposed towards achieving those objectives, but that having the right people and stakeholders involved was critical to successfully achieve and effectively maintain the necessary reforms.