Mounting a large-scale bias claim against a huge company will be more difficult in light of a Supreme Court decision that found no convincing proof of discrimination on which to allow a class action against retail giant Wal-Mart on behalf of as many as 1.6 million women.

All the justices agreed in the decision released Monday that the case couldn't proceed as a class action in its current form, reversing a decision by the 9th U.S. Circuit Court of Appeals in San Francisco. By a 5-4 vote along ideological lines, the court also said there were too many women in too many jobs at Wal-Mart to wrap into one lawsuit.

While individuals could still pursue their own cases, they would continue with the prospect of costly legal fees and long time frames and ultimately lack the power that would have accompanied the largest sex-discrimination lawsuit in U.S. history.

Two of the named plaintiffs, Christine Kwapnoski and Betty Dukes, vowed to continue their fight, even as they expressed disappointment about the ruling.

"We still are determined to go forward to present our case in court. We believe we will prevail there," said Dukes, a greeter at the Wal-Mart in Pittsburg, Calif.

A Navy subcontractor pleaded guilty Friday in Rhode Island for his part in what federal prosecutors say was a kickback scheme that cost the Navy millions of dollars.

Russell Spencer's plea was part of an agreement with prosecutors in which he promised to cooperate with authorities as he has been since investigators approached him in June 2010.

Spencer, 56, pleaded guilty to conspiring to commit bribery in helping funnel money, through his businesses, from a Navy contractor to a civilian Navy employee who prosecutors say then bumped up funding to the contractor. Prosecutors say the scheme cost the Navy between $7 million and $20 million.

The case prompted an internal Navy investigation that resulted in military officials in Washington suspending the contracting authority of Newport's Naval Undersea Warfare Center. The Navy said a host of contracting problems at the facility enabled the scheme.

According to the government, Ralph M. Mariano of Arlington, Va., who worked at the warfare center, initiated the scheme by threatening to use his position to reduce funding for contracts held by Advanced Solutions for Tomorrow if company owner Anjan Dutta-Gupta didn't kick back money to Mariano.

Dutta-Gupta, of Roswell, Ga., has pleaded guilty to paying $8 million in bribes over more than a decade. Mariano has been charged, but not indicted. He has declined to comment on the allegations, and remains free on bond.

Dominique Strauss-Kahn declared he had diplomatic immunity and complained that his handcuffs were too tight after he was taken into custody on allegations he tried to rape a Manhattan hotel maid, court documents show.

The documents filed Thursday by prosecutors provide a chronology of statements leading to the arrest of the former leader of the International Monetary Fund, who was taken into custody by Port Authority police at John F. Kennedy International Airport on May 14 as he tried to leave on a Paris-bound flight.

One of his attorneys, Benjamin Brafman, said Thursday he had no comment.

Strauss-Kahn, who is free on $1 million bail under house arrest at a luxury townhouse, maintains he did not attack the maid at Sofitel hotel.

The new court documents describe Strauss-Kahn seemingly confused as he is taken into custody.

"I have diplomatic immunity," Strauss-Kahn told officers, according to the documents. "... Can I speak with someone from the French consulate? What is this about?"

He asked detectives whether he needs an attorney, responded to questions about whether he is hungry (at one point saying he would "like some eggs") and complained about his handcuffs, the documents say.

"Manhattan detectives need to speak with you about an incident in a hotel room," responded one detective as they go from the airport to the Manhattan Special Victims Squad on May 14 at about 5:15 p.m., the documents say.