I was reading this article and stumbled upon this line
First, presidential dispensation is useful, but it's not remotely permanent. White House occupants change. A more authoritarian chief executive than Obama won't be bound by what he does.
The author comes up with this statement while discussing about a draconian and outdated law which many feel can be "overturned" by President Obama.
I looked into the dictionary meaning of the word "dispensation", but nowhere it means "overturned". The dictionary quotes that dispensation means to make special exemption for someone or distribution of stuff.
Can someone help me clarify the meaning of dispensation in this context and is it an oft used meaning of the said word?