A report examines 123 terrorist cases from the past 15 years, and the study's two principal authors say that the courts were able to produce just, reliable results while protecting national security.

The report comes at a time when the Bush administration's system of military commissions remains mired in delays.

Whether the case is the first attack on the World Trade Center in 1993 or the East African embassy bombings in 1998, judges, juries, defense attorneys and prosecutors are able to get the job done correctly, they say.

Although the justice system is far from perfect, it has proved to be adaptable and has successfully handled a large number of important and challenging terrorism prosecutions, said New York lawyers Richard Zabel and James Benjamin of the law firm Akin Gump Strauss Hauer & Feld.

In two employment cases, one involving race and the other, age, the court took an expansive view of workers' rights and avoided the narrow, ideology-based decisions that marked its previous term.

The justices read parts of an 1860s civil rights act and the main anti-age bias law to include the right to sue over reprisals even though neither provision expressly prohibits retaliation.

Justice Stephen Breyer, writing for the court in a case involving a black employee at a Cracker Barrel restaurant who was fired, said that previous Supreme Court decisions and congressional action make clear that retaliation is covered.

The idea that a provision of the Civil Rights Act of 1866, known as section 1981, "encompasses retaliation claims is indeed well-embedded in the law," Breyer said in the 7-2 ruling.

Federer improved to 16-3 on clay in 2008 by beating Sam Querrey of the United States 6-4, 6-4, 6-3 Monday in the first round of the French Open, where he is trying to become only the sixth man to complete a career Grand Slam.

"I've played well all clay-court season long," said the top-ranked Federer, who is 27-7 overall this year. "Didn't have many hiccups really, and I have plenty of matches. That was my goal as well."

Federer came into the French Open with only one title this year, which he won on clay. His seven losses are more than he had for the entire season in 2004, '05 and '06.

On Tuesday, the start of play was delayed by rain for 2 hours, 50 minutes. Rafael Nadal was scheduled to begin his quest for a fourth straight French Open title against Thomaz Bellucci of Brazil. Nikolay Davydenko, Lleyton Hewitt and 2003 champion Juan Carlos Ferrero were also to play.

Maria Sharapova and Amelie Mauresmo were to play in the women's tournament.

Federer was broken once early in the first set Monday, but he managed to win five times on Querrey's serve.

The justices have no comment on their action, in response to Ryan's claim that he and his fellow defendant, businessman Larry Warner did not receive a fair trial.

Their lawyers argued that the trial judge replaced two jurors with alternates after deliberations in the case had already begun.

Ryan, 74, is serving a 6 1/2 year sentence in federal prison.

The Chicago-based 7th U.S. Circuit Court of Appeals earlier upheld the convictions.

The court said in a 7-2 ruling that retaliation is another form of intentional, unlawful discrimination that is barred by the Civil Rights Act of 1866. It was enacted to benefit newly freed blacks.

Business groups objected that the law does not expressly prohibit retaliation and said employees should have to file suit under another law, Title VII of the Civil Rights Act of 1964. That law has a shorter deadline for filing suit and caps the amount of money that a successful plaintiff may recover.

The Bush administration was on the side of the workers.

The provision of the 1866 law, known as section 1981, does not explicitly mention retaliation.

But Justice Stephen Breyer, in his majority opinion, said that previous Supreme Court decisions and congressional action make clear that retaliation is covered.

Justices Antonin Scalia and Clarence Thomas dissented.

The case grew out of the firing of a black associate manager at a Cracker Barrel restaurant in Bradley, Ill. Hedrick Humphries claimed he was fired after he complained about race discrimination by other Cracker Barrel supervisors.

In a 7-2 ruling, Justice Ruth Bader Ginsburg says Gov. Bob Riley did not need advance approval from the federal government to fill the vacancy.

The case involves a provision of the Voting Rights Act of 1965 that requires Alabama and several other states — most of them in the South — to get federal approval before changing election procedures that affect minority voters.

Ginsburg says the issue in this case is a narrow one that does not have broader application to voting rights disputes.