Rep. Dan Boren (D-Oklahoma), a superdelegate for the Democratic Party, won't endorse Sen. Barack Obama (D-Illinois) for president.

Boren called Obama "the most liberal senator in the U.S. Senate." He said Obama's voting record doesn't reflect the constituents of Oklahoma's 2nd Congressional District.

Native Americans make up 15 percent of the district's population. Cherokee Nation Chief Chad Smith has publicly supported Obama. The Cherokees are the largest tribe in the district and the second-largest tribe in the U.S.

Obama is opposing legislation to cut funds to the Cherokee Nation over the citizenship status of the Freedmen, who are the descendants of former slaves. Boren also opposes the legislation.

Get the Story:
Boren won't endorse Obama (AP 6/11)

Related Stories:
Blog: Sen. Clinton's Indian outreach not a failure (6/10)
UNITY to host presidential nominees in Chicago (6/9)
Sen. Obama expected to attend Kalyn Free forum (6/5)
Sen. Obama claims Democratic nomination (6/4)
NCAI highlights Native vote in presidential race (6/3)
Mike Graham: Native vote will determine president (6/3)
Louis Gray: Send Sen. Obama to presidential victory (6/3)
Letter from Cherry Creek: Little hope on reservation (6/3)
Bury the presidential campaign at Wounded Knee (6/3)
PBS Newshour: Indian issues in presidential race (6/3)
Bill Clinton campaigns on South Dakota reservation (6/3)
Sen. Obama's family 'excited' about Crow adoption (6/3)
UK Paper: Clinton campaign dies on reservation (6/2)
Tribal leaders encouraged by campaign visits (5/30)
Editorial: Sen. Clinton better on Indian issues (5/30)
Editorial: To Sen. Obama on Montana's tribes (5/30)
Kevin Abourezk: Sen. McCain makes Indian pledge (5/30)
Opinion: John McCain, a passion for doing right (5/30)
Sen. Obama started Indian outreach early (5/29)
Early voting pushed on South Dakota reservations (5/29)
Pine Ridge Republican backs Clinton over Obama (5/29)
Column: Indian vote courted in presidential year (5/29)
Column: Clinton campaigns in the Badlands (5/29)
Sen. Clinton campaigns on Flathead Reservation (5/28)
Sen. Clinton interview with South Dakota paper (5/28)
Sen. Clinton to campaign on Pine Ridge Reservation (5/27)
Sen. McCain meets with tribal leaders in New Mexico (5/27)
Sen. McCain touts Indian experience over Obama (5/27)
Eastern Shoshone teen endorses Sen. Obama (5/27)
Opinion: Candidates refuse Indian contributions (5/23)
Editorial: Lobbyists run McCain and Obama campaigns (5/23)
Jodi Rave: Sen. Obama eyes Democratic nomination (5/22)
Sen. Clinton to campaign on reservations (5/22)
The Native Voice: On the trail with Sen. Obama (5/21)
Sen. Clinton courts Indian vote in South Dakota (5/21)
The Native Voice: On the trail with Sen. Obama (5/20)
Jodi Rave: Sen. Obama first to visit reservation (5/20)
Crow Tribe welcomes Sen. Obama to reservation (5/20)
The Native Voice: On the trail with Sen. Obama (5/19)
Oregon Tribal Leaders: Why we support Sen. Obama (5/19)
Sen. Obama to hold rally on Crow Reservation (5/19)
Sen. Clinton reiterates Indian health support (5/16)
Bill Clinton campaigns on Pine Ridge Reservation (5/15)
Jodi Rave: A candidate for the youngest generation (5/15)
Jodi Rave: Clinton and Obama court Indian vote (5/14)
Clinton and Obama eye Indian vote in South Dakota (5/14)
Column: Russell Means predicts Obama win in 2008 (5/14)
Bill Clinton to campaign on Pine Ridge Reservation (5/13)
South Dakota Indians back Clinton for president (5/12)
Indian superdelegate backs Obama for president (5/12)
Cherokee chief praises Obama as 'good president' (5/12)
New Mexico selects Indian superdelegate (5/9)
Kevin Abourezk: Obama and McCain on Indians (5/9)
Counting the Indian vote in North Carolina (5/8)
Sen. Obama and Sen. Clinton share primary victories (5/7)
Jodi Rave: Obama secures Indian superdelegates (5/6)
Sen. Obama welcomes Kalyn Free's endorsement (5/6)
Clinton and Obama back Lumbee recognition (5/6)
Superdelegate Kalyn Free endorses Sen. Obama (5/5)
Abourezk: Crow man spreads Obama's message (5/2)