Quarreling and confusion marked the start of the Senate's confirmation hearings for Supreme Court nominee Brett Kavanaugh on Tuesday, with Democrats trying to block the proceedings because of documents being withheld by the White House. Protesters also disrupted the proceedings.

In his opening remarks released ahead of delivery, Kavanaugh sought to tamp down the controversy over his nomination, which would likely shift the closely divided court to the right. He promised to be a "team player" if confirmed, declaring that he would be a "pro-law judge" who would not decide cases based on his personal views.

But Democrats raised objections from the moment Chairman Chuck Grassley gaveled the committee to order. They want to review 100,000 documents about Kavanaugh's record being withheld by the White House as well as some 42,000 documents released to the committee on a confidential basis on the eve of the hearing, along with others not sought by Republicans on the committee.

"We have not been given an opportunity to have a meaningful hearing on this nominee," said Sen. Kamala Harris, D-Calif. Sen. Richard Blumenthal, D-Conn., made a motion to adjourn.

Grassley denied his request, but the arguments persisted.

More than a dozen protesters, shouting one by one, disrupted the hearing at several points and were removed by police. "This is a mockery and a travesty of justice," shouted one woman. "Cancel Brett Kavanaugh!"

Grassley defended the document production as the most open in history, saying there was "no reason to delay the hearing. He asked Kavanaugh, who sat before the committee with White House officials behind him, to introduce his parents, wife and children.

"I'm very honored to be here," Kavanaugh said.

With majority Republicans appearing united, it's doubtful the hearings will affect the eventual confirmation of President Donald Trump's nominee. But they will likely become a rallying cry for both parties just two months before the midterm elections.

Kavanaugh declared he would be even-handed in his approach to the law.

"A good judge must be an umpire, a neutral and impartial arbiter who favors no litigant or policy," Kavanaugh said in prepared opening remarks. "I am not a pro-plaintiff or pro-defendant judge. I am not a pro-prosecution or pro-defense judge."

"I would always strive to be a team player on the Team of Nine," he added.

The Supreme Court is more often thought of as nine separate judges, rather than a team. And on the most contentious cases, the court tends to split into two sides, conservative and liberal. But the justices often say they seek consensus when they can, and they like to focus on how frequently they reach unanimous decisions.