Condoleezza Rice is calling Barack Obama's achievement an "extraordinary" development for the United States.
The highest-ranking black member of the Bush administration is congratulating Obama on his historic achievement of securing the Democratic presidential nomination.
Rice calls it a moment when the Founding Fathers' phrase "We the people" is beginning to mean "all of us."
She also congratulated Hillary Rodham Clinton on her campaign, as well as Republican nominee-in-waiting John McCain. Rice has been often mentioned as a possible running mate for McCain. But today she again mentioned her plans to watch the election campaign only "on the sidelines as a voter."