The diplomat described the Western Wall in Jerusalem's Old City -- one of Judaism's holiest sites -- as being in the West Bank.
The Israeli Prime Minister's office said it was shocked by the comments and said it had asked the United States to explain what was meant by them.
According to Israel's Channel 2 News, a member of the US delegation preparing for Trump's visit made the comment about the wall when Israeli officials suggested a photographer shoot video of the President during a proposed visit to the site.
