WASHINGTON -- As a senator, Barack Obama led the charge last year to pass a bill allowing black farmers to seek new discrimination claims against the Agriculture Department. Now he is president, and his administration so far is acting like it wants the potentially budget-busting lawsuits to go away.

The change isn't sitting well with black farmers who thought they'd get a friendlier reception from Obama after years of resistance from President George W. Bush.

"You can't blame it on the Bush administration anymore," said John Boyd, head of the National Black Farmers Association, which has organized the lawsuits. "I can't figure out for the life of me why the president wouldn't want to implement a bill that he fought for as a U.S. senator."

At issue is a class-action lawsuit known as the Pigford case. Thousands of farmers sued USDA claiming they had for years been denied government loans and other assistance that routinely went to whites. The government settled in 1999 and has paid out nearly $1 billion in damages on almost 16,000 claims.

Farmers, lawyers and activists like Boyd have worked for years to reopen the case because thousands of farmers missed the deadlines for participating. Many said the filing period was too short and they were unaware of the settlement until it was too late.

The cause gained momentum in August 2007 when Obama, then an Illinois senator, introduced Pigford legislation about six months into his presidential campaign.

Although the case was hardly a hot-button political issue, it had drawn intense interest among African-Americans in the rural South. It was seen as a way for Obama to reach out in those areas, where he was not well-known and where he would need strong support to win the Democratic primary.

The proposal won passage in May as sponsors rounded up enough support to incorporate it into the 2008 farm bill. The potential budget implications were huge: It could easily cost $2 billion or $3 billion given an estimated 65,000 pending claims.

With pressure to hold down costs, lawmakers set an artificially low $100 million budget. They called it a first step and said more money could be approved later.

But with 25,000 new claims and counting, the Obama administration is now arguing that the $100 million budget should be considered a cap to be split among the successful cases.

The position -- spelled out in a legal motion filed in February and reiterated in recent settlement talks -- would leave payments as low as $2,000 or $3,000 per farmer. Boyd called that "insulting."

Boyd noted that Obama's legislation specifically called for the new claimants to be eligible for the same awards as the initial lawsuit, including expedited payments of $50,000 plus $12,500 in tax breaks that the vast majority of the earlier farmers received.

"I'm really disappointed," Boyd said. "This is the president's bill."

"They did discriminate against these farmers, maybe not all of them, but a lot of these people would prevail if they could go to court," he said.

The administration wouldn't discuss specific budget plans or commit to fully funding the claims.

But in a statement to The Associated Press, Agriculture Secretary Tom Vilsack said the department agrees that more needs to be done and is working with the Justice Department to "ensure that people are treated fairly."

Kenneth Baer, a budget spokesman for the White House, also suggested that the White House is planning to do more.

"The president has been a leader on this issue since his days as a U.S. senator and is deeply committed to closing this painful chapter in our history," Baer said in a statement.