Daniel Akaka is the senior United States Senator (D) from Hawaii. He is the first (and so far only) Senator of native Hawaiian ancestry, as well as the only currently serving Senator of Chinese ancestry. He is, like his fellow Hawaiian Senator, Daniel Inouye, a World War II veteran, serving in the Army Corps of Engineers as a mechanic on the Morning Star.
He is a fairly reliable liberal Democrat, having opposed the Iraq War, but without leading many bills of his own. The one exception is his bill, SB 1011 (commonly known as the Akaka Bill) to give limited self-government to native Hawaiians, on a similar basis to that given to Native American tribes in the continental US. Supporters claim that it is necessary to make up for the century of theft and mistreatment of native Hawaiians; opponents view it as setting up an unconstitutional "race-based" government. However, none of those people have talked about ending the reservations that exist. He has introduced the bill several times, but it has never come out of committee; this has not prevented conservatives from hyperventilating about it every single time. 
Time Magazine also once ranked him as one of the "Ten Worst Senators", due to his overall do-nothing-ness.