Obama's two-part plan, which he will announce later Monday at the White House, also embraces 800 additional federal agents to enforce the tax code.

The president's proposal would eliminate some tax deductions for companies that earn profits in countries with low tax rates, as well as consider U.S. citizens who use tax havens in the Bahamas or Cayman Islands guilty of violating U.S. tax laws. If Obama wins congressional approval for the changes — and he faces a challenge on Capitol Hill — the new enforcement initiative could yield $210 billion in tax revenue over the next decade.

Treasury Secretary Timothy Geithner was to join Obama for the comments. The White House released details of the plan earlier Monday.

White House officials acknowledged the political challenges facing the plan. The administration won't seek a complete repeal of overseas tax benefits and, although the rule changes are narrower than some anticipated, business leaders still oppose them as a tax hike. Obama aides countered that the plan is a step toward the massive overhaul of international financial regulations that the president has promised.

In exchange, Obama said he was willing to make permanent a research tax credit that was to expire at the end of the year and is popular with businesses. Officials estimate that making the tax credits permanent would cost taxpayers $74.5 billion over the next decade.

Lawyers for John Odgren say he was legally insane when he fatally stabbed 15-year-old James Alenson at Lincoln-Sudbury Regional High School in January 2007.

A judge ruled last year that prosecutors improperly obtained more than 30 hours of Odgren's jailhouse conversations.

But prosecutors say they obtained the recordings lawfully. They want to play the recordings at Odgren's trial because they believe the conversations show a lucid boy who was not in the throes of mental illness.

The Supreme Judicial Court will hear prosecutors' appeal on Monday.

Trustee Irving Picard says in a complaint filed Friday in Bankruptcy Court that Stanley Chais and his family made more than $1 billion in false earnings off Madoff's scheme. He claims the money came from the pockets of burned investors. He wants the money back.

Chais lawyer Eugene Licker says the Chais family has suffered "astounding and ruinous losses from the Madoff scheme."

Madoff pleaded guilty in March to charges his secretive investment advisory operation was a pyramid scheme. He faces up to 150 years in prison.

Picard is overseeing the liquidation of Madoff's assets. He says he plans to use sale proceeds to pay Madoff's victims.

Critics of the prosecution of Steven Rosen and Keith Weissman of the American Israel Public Afffairs Committee had accused the federal government of trying to criminalize the sort of back-channel discussions between government officials, lobbyists and reporters that are commonplace in the nation's capital. AIPAC is an influential pro-Israel lobbying group.

Acting U.S. Attorney Dana Boente said the government moved to dismiss the charges in the drawn-out case after concluding that pretrial rulings would make it too difficult for the government to prove its case.

U.S. District Judge T.S. Ellis III had made several legal rulings that prosecutors worried would make it almost impossible to obtain a guilty verdict. Among them was a requirement that the government would have to prove that Rosen and Weissman intended to harm the United States by trading in sensitive national defense information.

The trial had been scheduled to start June 2 in a case that has dragged on for four years.

Rosen and Weissman had not been charged with actual espionage, although the charges did fall under provisions of the 1917 Espionage Act, a rarely used World War I-era law that had never before been applied to lobbyists.

A former Defense Department official, Lawrence A. Franklin, previously pleaded guilty to providing Rosen and Weissman classified defense information and was sentenced to more than 12 years in prison.

This came as the high court on Wednesday upheld the conviction and sentence of Christopher Michael Dean, who was arrested for trying to rob a bank in Rome, Georgia, in 2004.

A gun went off accidentally during the attempted robbery when Dean tried to switch the weapon from one hand to the other. The discharge brought an automatic 10-year sentence for firing a weapon during a crime. Dean appealed, saying the automatic sentence shouldn't count since the firing of the gun was accidental.

Federal prosecutors said the law doesn't care why the gun went off, and the high court agreed.

Chief Justice John Roberts, who called it "the case of the bungling bank robber" in his bench statement, said the law "does not require that the discharge be done knowingly or intentionally."

If criminals want to avoid the penalty for accidental gunfire, they can "lock or unload the firearm, handle it with care during the underlying violent or drug trafficking crime, leave the gun at home or — best yet — avoid committing the felony in the first place," Roberts said.

Justices John Paul Stevens and Stephen Breyer dissented, saying Congress intended the automatic sentence to only apply to intentional discharges of weapons.

It is the second major race case heard by the justices after Barack Obama became the nation's first black president.

The justices seemed split along conservative and liberal lines in considering a provision applying to all or parts of 16 states, mostly in the South. It requires them to get federal government approval before changing their voting procedures.

Congress adopted the Voting Rights Act, an historic piece of U.S. civil rights legislation, to make it easier for millions of blacks and other minorities to exercise their right to vote.

Congress extended it in 2006 for 25 years, with then-President George W. Bush signing it into law.

Last week the justices considered whether race still can be used as a factor for job promotions and hirings, an issue that could affect millions of employers nationwide.

Opponents of the voting rights law argue that the protections for minority voters are no longer needed after more than 40 years of progress, and they cite Obama's election as evidence of how America has changed since 1965.