Sarah Palin: Levi Johnston Doesn’t Have Anything on Me

Following her interview with Oprah Winfrey on Monday, former vice presidential candidate Sarah Palin continues to promote her book, sitting down with Barbara Walters to set the record straight about claims made by Levi Johnston that her marriage is on the rocks and that she called her youngest child Trig a derogatory term.

Johnston, 19, claimed on "The Early Show" last month that Palin had called Trig, who is afflicted with Down syndrome, "retarded."

"That's heartbreaking to know that that he would say such a thing and that's not true," she tells Walters, who aired her interview with Palin on "Good Morning America."