Sen. Larry Craig, R-Idaho, takes part in a Senate Environment and Public Works hearing in Washington Thursday, Sept. 20, 2007. (AP Photo/Dennis Cook)
(AP) Sen. Larry Craig says he will file an appeal Monday over a judge's refusal to allow him to withdraw his guilty plea stemming from his arrest in an airport bathroom sex sting.
In an interview Sunday with KTVB-TV, Craig repeated he will not resign his post in the Senate and said he will continue to work his legal options.
"It is my right to do what I'm doing," said Craig, an Idaho Republican. "I've already provided for Idaho certainty that Idaho needed - I'm not running for re-election. I'm no longer in the way. I am pursuing my constitutional rights."
In another interview, Craig's wife, Suzanne, said the senator didn't tell her about the arrest until the story was about to break in the media. "I felt like the floor was falling out from under me. ... And I felt like almost like I was going down a drain for a few moments," she told NBC's Matt Lauer.
Sen. Craig told Lauer it was a "tough call" not to tell anyone about the incident. "I didn't want to embarrass my wife, my kids, Idaho and my friends," Craig said. "And I wrestled with it a long while. ... I should have told my wife. I should have told my kids. And most importantly, I should have told counsel."
The senator also discussed his relationship with Republican presidential candidate Mitt Romney. Craig was Senate liaison for Romney's campaign, a post he abandoned when the scandal came to light.
"I was very proud of my association with Mitt Romney," Craig told Lauer. "...And he not only threw me under his campaign bus, he backed up and ran over me again."
Lauer's interview with the Craigs will be broadcast Tuesday night on "Matt Lauer Reports" and Wednesday morning on "Today."
Craig pleaded guilty to disorderly conduct in August after he was accused of soliciting sex in a bathroom at the Minneapolis-St. Paul airport in June.
After the matter became public, Craig tried to withdraw his plea. But a judge in Minnesota refused, saying Craig's plea "was accurate, voluntary and intelligent, and ... supported by the evidence."