A former campaign staffer for Barack Obama says Minnesota Sen. Al Franken’s behavior toward women, if true, is “gross” and he should step down.

“Last week I was very proud of him for how he handled it when he asked for the investigation and he apologized, and the young lady accepted the apology,” Robin Biro told Laura Ingraham on “The Ingraham Angle” Monday night. “But what I heard today was very gross to me because he said if she felt disrespected, that he felt bad about that.”

“To me, that sounds like the language of somebody who may have actually done this so many times that it’s normalized,” said Biro. “Like he almost can’t remember doing it or not, and I think that he himself knows, and if he did do this, in fact, he really does need to resign, because we should have a zero tolerance policy for this, just like we do in the military for sexual assault.”

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Biro is an LGBT activist and former Army Ranger who worked as a field director for the 2008 Obama campaign in North Carolina, South Carolina, and Georgia. He was also a Hillary Clinton delegate to the Democratic National Convention in the summer of 2016 and serves on the Democratic National Committee’s Victory Leaders Council.

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Franken, a liberal Democrat who previously worked as a comedy writer for “Saturday Night Live,” was elected to the Senate from Minnesota in 2008 in a close race in which the official tally had him losing by 215 votes on election night. After a recount, however, in which every decision of the canvassing board seemed to go his way, he was declared the winner by 225 votes and was finally seated as a U.S. senator in July of 2009.

“To me, [Franken’s apology] sounds like the language of somebody who may have actually done this so many times that it’s normalized.”

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Last week, radio talk-show host Leeann Tweeden came forward with a story about Al Franken that rocked Washington. While practicing in Afghanistan for a USO show they were to perform for U.S. troops, Franken forcibly kissed her and shoved his tongue into her mouth, she said. And later, on the way back on the plane, he grabbed her breasts while she was sleeping. She had evidence — a photo that had been taken by a photographer of Franken with his fingers splayed, grabbing her chest through her clothes as she slept, and smiling wickedly back at the camera.

But this happened in 2006.

On Monday, CNN published the account of a young woman named Lindsay Menz who said Sen. Franken had groped her at the Minnesota State Fair in the summer of 2010, grabbing her buttocks while she was having her picture taken with him. Her husband was taking the picture, and her father was standing nearby, she said.

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Menz is now a mother of three living in Texas. She told CNN that she was working at a booth at the fair with her husband and father, and that when she’d asked Franken for a picture together, he had pulled her very close, and that as the picture was being taken, her grabbed her backside.

He “pulled me in really close, like awkward close, and as my husband took the picture, he put his hand full-fledged on my rear,” Menz said. “It was wrapped tightly around my butt cheek.”

Franken said in a statement that he did not remember meeting Menz.

“I take thousands of photos at the state fair surrounded by hundreds of people, and I certainly don’t remember taking this picture,” Franken said, after he was sent the photo of him with Menz. “I feel badly that Ms. Menz came away from our interaction feeling disrespected.”

Sen. Mitch McConnell said last week that the Senate Ethics Committee would launch an investigation into Franken’s behavior, and he repeated this again yesterday in the wake of the new allegation by Menz.