Speaking of heat waves: Linda Ronstadt was escorted from the Aladdin Resort & Casino in Las Vegas July 17 after her dedication of ”Desperado” to ”great American patriot” Michael Moore caused a brouhaha. In a statement, the Aladdin said it hired Ronstadt to entertain, ”not to espouse…political views.” Ronstadt is the second celeb in days to feel backlash from political remarks made on stage. Diet-drink company Slim-Fast shed spokesperson Whoopi Goldberg July 14 after her anti-Bush jokes at a Kerry fund-raiser. (The company was ”disappointed by the manner in which Ms. Goldberg chose to express herself.”) As for Ronstadt: ”She didn’t sleep out in the desert,” her agent laughs. ”She’s an articulate, well-informed woman. I’m sure she’ll say the same thing again.” Never one to miss an opportunity, Moore offered to sing ”America the Beautiful” with Ronstadt and show ”Fahrenheit 9/11” to hotel guests for free.