WASHINGTON (Reuters) - Former U.S. Vice President Joe Biden, in his first interview as a Democratic presidential candidate, insisted on Friday that he did not treat law professor Anita Hill badly during confirmation hearings for Supreme Court Justice Clarence Thomas held almost 30 years ago.

Democratic presidential candidate, former U.S. Vice President Joe Biden, acknowledges supporters and members of the press following an appearance on ABC's 'The View' in New York, U.S., April 26, 2019. REUTERS/Brendan McDermid

Biden had joined the burgeoning 2020 Democratic field a day earlier. He struggled to respond to questions about Hill, as well as questions about his unwanted touching of women, making for a rocky moment in the early stages of his candidacy.

At times, Biden seemed to oscillate between defending his behavior and saying he did nothing wrong and apologizing and trying to make amends. Often, he seemed stranded in-between.

Biden’s conduct during the hearings in 1991, when he was chairman of the U.S. Senate Judiciary Committee, became a renewed subject of controversy after the New York Times reported that Biden had called Hill earlier this month in the run-up to his presidential bid and that Hill was dissatisfied with Biden’s expression of regret. She said she could not support his presidential bid.

Appearing on ABC’s “The View,” Biden, then a senator from Delaware, largely justified his actions at the time, saying he believed Hill’s allegations of sexual harassment levied at Thomas and tried to derail his confirmation.

Activists have long been unhappy that Hill was questioned in graphic detail by the all-white, all-male committee chaired by Biden.

“I’m sorry she was treated the way she was treated,” Biden said, but later, he asserted, “I don’t think I treated her badly. ... How do you stop people from asking inflammatory questions?”

“There were a lot of mistakes made across the board and for those I apologize,” he said.

Biden praised Hill as “remarkable” and said she is “one of the reasons we have the #MeToo movement.”

Asked why he had not reached out to Hill earlier, Biden said he had previously publicly stated he had regrets about her experience and that he “didn’t want to quote invade her space.”

That seemed to be a reference to another controversy that looms over Biden’s presidential run: allegations by several women that he made them uncomfortable by touching them at political events.

Biden also addressed that criticism, saying he was now more “cognizant” about a woman’s “private space.” But he maintained that he had been “trying to bring solace.”

He suggested he was still trying to sort out the guidelines for his conduct going forward.

“I should be able to read better,” he said. “I have to be more careful.”

Pressed by the show’s panel for an apology to his accusers, Biden would not entirely capitulate.

“Sorry I invaded your space,” he replied. “I mean, I’m sorry this happened. But I’m not sorry in a sense that I think I did anything that was intentionally designed to do anything wrong or be inappropriate.”

Biden, 76, served as former President Barack Obama’s vice president for two terms. He is competing with 19 others for the Democratic presidential nomination and the chance to likely face President Donald Trump next year in the general election.

After the interview, a Biden adviser, Symone Sanders, posted on Twitter that Biden “clearly is someone unapologetic about his authenticity, sincere and genuine in his apology, has a vision for America and understands how we relate to the rest of the world.”

Biden’s first public event as a presidential candidate is scheduled for Monday in Pittsburgh.