Ezra Taft Benson teaches that all of America is Zion.
Ezra Taft Benson, Speech, April 3, 1955, in Conference Report (Salt Lake City: The Church of Jesus Christ of Latter-day Saints, 1955), 48
I found they like to be referred to as Americans. They are very proud that they have thousands of their students here in the United States learning our way of life and learning of our agriculture and our technology. I found they were very happy to learn that to the Latter-day Saints the Promised Land, the land of Zion, includes all of North and South America. I was pleased to find, too, that there is evidence that communism has largely failed in those countries. True, there are some danger spots, still, but there is evidence that political stability is increasing. I was very much pleased as I visited personally with the Presidents of those republics, to hear them speak out in support of the principles of freedom which have meant so much to our great nation and our good neighbor to the north of us.