WASHINGTON, Aug. 12 (UPI) -- Hillary Clinton's former chief political strategist said in a memo during the U.S. presidential primaries she should challenge Barack Obama's "American roots."

NEW YORK, May 22 (UPI) -- Democratic presidential hopeful Hillary Clinton's campaign is $20 million in debt, campaign finance records show.

WASHINGTON, April 8 (UPI) -- Democratic U.S. presidential hopeful Hillary Clinton owes her former campaign strategist about $2.5 million, campaign finance papers show.

MISSOULA, Mo., April 7 (UPI) -- Sen. Hillary Clinton signaled she is in the campaign for the long-haul at an event in Montana, which holds one of the last presidential primary elections.

WASHINGTON, April 7 (UPI) -- Sen. Hillary Clinton's bid to be the Democratic U.S. presidential nominee is getting harder, as another superdelegate announced plans to support her rival.

EUGENE, Ore., April 6 (UPI) -- Mark Penn is resigning as chief strategist for the presidential campaign of U.S. Sen. Hillary Clinton, D-N.Y., ABCNews.com reported Sunday.

WASHINGTON, April 5 (UPI) -- A coalition of unions backing Democratic U.S. presidential hopeful Barack Obama is calling on rival Hillary Clinton to fire one of her advisers, the group said.

WASHINGTON, March 26 (UPI) -- Republicans and Democrats are labeling U.S. Sen. Barack Obama, D-Ill., as a liberal, prompting political observers to wonder just how left-leaning he is.

WASHINGTON, March. 20 (UPI) -- U.S. Sen. Hillary Clinton, D-N.Y., faces a narrowing path to the Democratic presidential nomination, needing some breaks along the way, her advisers say.