The incident happened moments after Clinton took the stage before an Institute of Scrap Recycling Industries meeting at the Mandalay Bay resort.
Clinton ducked but did not appear to be hit by the object, and then joked about it.
“Is that somebody throwing something at me? Is that part of Cirque de Soleil?” Clinton quipped.
Many in the audience of more than 1,000 people in a large ballroom laughed and applauded as Clinton resumed her speech.
Read more from this story HERE.