WASHINGTON — Minnesota Sen. Al Franken personally apologized to the woman who has accused him of forcibly kissing her and groping her during a 2006 USO tour, saying he remembers their encounter differently but is "ashamed that my actions ruined that experience for you."

In a guest appearance Friday on ABC's The View, Leeann Tweeden read a letter she received from the Democratic lawmaker in which he also discussed a photo showing him posing in a joking manner, smiling at the camera with his hands above her chest as she naps wearing a flak vest aboard a military plane.

Franken missed votes in the Senate on Thursday afternoon and has not made any public appearances since the allegations came out.

Both had been performing for military personnel in Afghanistan two years before the one-time Saturday Night Live comedian was elected to the Senate. Tweeden, a former Fox TV sports correspondent who now is a Los Angeles radio anchor, has said Franken had persisted in rehearsing a kiss and "aggressively stuck his tongue in my mouth."

Franken told Tweeden in the letter he wanted to "apologize to you personally," adding: "I don't know what was in my head when I took that picture. But that doesn't matter. There's no excuse. I understand why you can feel violated by that photo. … I have tremendous respect for your work for the USO. And I am ashamed that my actions ruined that experience for you. I am so sorry.'"

Franken, 66, was the latest public figure to be caught in the deluge of revelations of sexual harassment and misconduct that have crushed careers, ruined reputations and prompted criminal investigations in Hollywood, business and beyond.

While Franken has repeatedly apologized, there were no signs the issue would go away any time soon. Fellow Democrats swiftly condemned his actions, mindful of the current climate as well as the prospect of political blowback in next year's elections.

Republicans, still forced to answer for the multiple allegations facing Alabama Senate candidate Roy Moore, joined in pressing for an investigation. Franken said he would welcome it.

Franken abruptly canceled a sold-out book festival appearance scheduled for Monday in Atlanta, festival organizers said. He had been scheduled to speak and promote his book, Al Franken, Giant of the Senate.