Don't forget the transfers were already blocked because of the sanctions against Iran. International big banks wouldn't process the transfers for fear of breaking the sanctions and being penalized.
I do think 0bama wanted to do cash anyway - to try to keep it quiet and hide the real amount - but a transfer wouldn't have worked without pausing or removing the sanctions.
Don't forget the transfers were already blocked because of the sanctions against Iran. International big banks wouldn't process the transfers for fear of breaking the sanctions and being penalized.
I do think 0bama wanted to do cash anyway - to try to keep it quiet and hide the real amount - but a transfer wouldn't have worked without pausing or removing the sanctions.