Abramoff figures in at least four separate, interrelated scandals:
He and partner Adam Kidan have been indicted on wire fraud and conspiracy charges involving the 2000 purchase of SunCruz Casinos, a Florida gambling boat venture;
He funneled money into the PAC run by House Majority Whip Rep. Tom DeLay that has led to Texas charges against DeLay for illegally laundering campaign donations;
He and partner Michael Scanlon are suspected of defrauding and vastly overbilling Native American tribes and other clients with gaming interests; and
He and Scanlon are also suspected of bribing and offering gifts and spousal jobs to Congressmembers and Executive Branch officials in exchange for actions favorable to their clients.
There lots more in this excellent overview of the corruption in DC that will unquestionably result in the indictments of members of Congress.