A bipartisan effort aimed at protecting the Kennedy Center from demolition was blocked on the Senate floor Monday night by a lone Republican senator. Sen. Mike Lee of Utah objected to passage of a bill stipulating that any presidential memorial designated by an act of Congress " including the Kennedy Center " could not be demolished without congressional approval. Supporters of the bill attempted to pass it via a fast-track process known as a unanimous consent request. But any single senator can object to such a request.