Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Biden Calls for Unity as Country Faces 'Time of Testing' Rob Garver Facing as monumental a set of challenges as any chief executive in generations, Joe Biden took office as the 46th president of the United States on Wednesday and pledged to rally the nation to answer "the call of history." Standing on the steps of the West Front of the U.S. Capitol, where two weeks prior an angry mob attacked Congress in an effort to prevent the certification of his election, Biden said the nation is in "a time of testing." "We face an attack on our democracy and on truth," he said. "A raging virus, growing inequity, the sting of systemic racism, a climate in crisis. America's role in the world." .