I may be wrong, but that sure looks like Ronald Reagan, and Margaret Thatcher at the White House. Don't remember him having a Bouvier, though.
Yup, it’s Ronnie and his “gift” Bouvier des Flandres, “Lucky”.
It was ginormous pup who dragged him and Nancy around like kites for several months until they sent it off to his CA ranch.
They then got the little dog...a Cavalier, I think.