I think you guys are missing something really important here...
He's the President. If he says he wants a "rescue" dog, someone is going to "arrange" for a rescue PWD to be found, just in the nick of time.
I also agree that someone will be brought to the White House to maintain the President's family pet. I also think they will arrange for an older PWD so they can milk that for all it's worth too.
I think they should go for a rescue Brussel's Griffon. Now THAT would be funny!!!
"The President said make them an offer they couldn't refuse" regards