NEW : Reid : Reid is friend who `` has always been on right side of history '' Sen. Obama apologizes to Obama for remarks made during last week campaign . Key Democratic have called Reid 's comments racist and say he should step down . Obama emphasizes longstanding support for President Obama .
NEW : Obama : Reid is friend who `` has always been on right side of history '' Sen. Harry Reid apologizes to Obama for remarks made during 2008 campaign . Key Republicans have called Reid 's comments racist and say he should step down . Reid emphasizes longstanding support for President Obama .