After the casino project was rejected, Mr. O'Connor's tribal clients contributed $270,000 to the Democratic National Committee.

He admitted lying to a Senate committee about his relationship with Abramoff, who repeatedly sought Griles' intervention at Interior on behalf of Indian tribal clients.

For the 2004 election cycle, its top three donors included two Indian tribal clients of Jack Abramoff.

Abramoff and Scanlon used the firm to bilk tribal clients for millions of dollars in fees.

The court documents also describe conversations in which Volz told Ney what Abramoff wanted him to say in meetings with the tribal client.

About one tribal client Abramoff had written to Scanlon, "These mofos are the stupidest idiots in the land for sure."

Donations were made to CREA by both Abramoff's tribal clients and by energy-sector companies with connections to Griles.

From 2001 to 2003, the Justice Department said, Mr. Abramoff and his tribal clients contributed $500,000 to Ms. Federici's advocacy group.

It turns out that Senator Burns has seen his campaign chest enriched with $137,000 in donations from Mr. Abramoff and his tribal clients.

The council received hundreds of thousands of dollars in donations from Mr. Abramoff's tribal clients.