Also see this article GOP Politicians Dump Abramoff Donations

Here's an excerpt from that article:
"So far the primary response by politicians has been to separate themselves from campaign contributions they took from Abramoff or Indian tribes he represented _ either by returning them or donating them to charity.

In just the two days since Abramoff pleaded guilty Tuesday in Washington to three federal felonies, more than 40 elected federal officials have given up Abramoff donations, joining a dozen who did so last year.

This week's list was headed by Republicans Bush, Frist, Hastert, House Majority Leader Roy Blunt of Missouri and former House Majority Leader Tom DeLay of Texas, who faces legal problems of his own. But some Democrats joined in, including Sen. Hillary Clinton of New York.

Republicans dominated the list _ not surprising given that Abramoff, a friend of DeLay's, gave far more to them than to Democrats.

The scandal's effect on the 2006 election was on the mind of many who jettisoned the donations.

"I wish it hadn't happened because it's not going to help us keep our majority," conceded Rep. Ralph Regula, R-Ohio."

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Doesn't it seem from reading this and alot of other mainsteam media articles that American Indian tribes were the only source of Abramoff's donated money? What about the other sources mentioned in that dailykos diary I referenced earlier? Are politicians who received money from those sources giving it back too and why did they get it in the first place?