The candidate disinvited Wright from giving the convocation when he announced his Presidential bid.
NEWYORKER: The Other Obama
2.
He said two other day-care centers, neither of which included minority children, had previously been similarly disinvited.
CNN: Swim club accused of racial discrimination against kids
3.
He has not, so far as I can tell, been disinvited from any conferences, associations, or been asked to resign from the American Philosophical Association.