Re: Put George & Gracie on the Federation Council?
Easy. Just time-travel back to sometime before the 1980s.
Definitely not a good idea, you might be taking an ancestor of George & Gracie and thus create a time paradox!
Therefore, any future visits to the past to bring back humpback whales would / should be restricted to the point/s in time after George & Gracie had left.
"The first duty of every Starfleet officer is to the truth" Jean-Luc Picard
"We can't solve problems by using the same kind of thinking we used when we created them." Albert Einstein