Holder served as deputy attorney general under former President Clinton; if nominated and confirmed he would be first African-American to head US Justice Department
Stevens, who was convicted last month of corruption and lost a reelection bid, said he treasured every moment of the 40 years he spent representing his state
Media reports say former president will submit to extensive ethics review if his wife, Senator Hillary Clinton, is nominated to be secretary of state in Obama administration
The elder statesman, who served in Republican administrations, says if President-elect Obama chooses Mrs. Clinton it would show 'great courage' on his part