Don't you think that giving it up after 3 years is a little strange?
Remember, she only got the license after having spent hundreds of thousands of dollars and a commitment of at least four years.
Did your moped license cost you that much money and effort?
At no time did she loose the fact that she had passed the bar and recived a law degree or that she could act as a lawyer (advisory) just could not practice in a court of law.
If she had wished to practice at court she could then and could now petition the court and the court would issue an ORDER to reinstate her after fulfilling the requirements of rule 759
Note I am not defending the Obamas I am just pointing out what the actual rules of the court state and that there is no evidence of a sanction on her record.