BBC NEWS | Entertainment | Ronstadt casino furore over Moore
"Ronstadt called Moore a 'great American patriot' and 'someone who is spreading the truth' during a performance at the Aladdin venue on Saturday."
Aladdin president Bill Timmins said Ronstadt was escorted off the property.
Ronstadt "spoiled a wonderful evening for our guests and we had to do something about it", Mr Timmins said.
He said the 58-year-old singer, booked to play the Aladdin for one show only, was not allowed back in her luxury suite after the show.