Timothy Geithner was sworn in as US Treasury Secretary within hours of the Senate approving his nomination on Monday. The confirmation by 60 votes to 34 was delayed due to concerns Mr Geithner had failed to pay previous taxes on time.
Barack Obama retook on Wednesday the US presidential oath of office, after the inauguration blunder that was heard throughout the world. Supreme Court Chief Justice John Roberts delivered the oath to Mr Obama at the White House in a rare move in which no TV camera crews or news photographers were allowed in.
The United States Senate in an overwhelming 94 to 2 vote Wednesday, gave final approval to the nomination of Senator and former First Lady Hillary Clinton as Secretary of State. Action was delayed by one day because of Republican concerns about fund-raising by former President Bill Clinton's charitable foundation.
US President Barack Obama is expected to sign an executive order to close the Guantanamo Bay prison within a year. A draft order circulated on Wednesday also called for halting military trials in the prison, where terror suspects had been held for years without trial.
More dialogue is what countries are expecting from the administration of President Barack Obama, according to the Organization of American States, OAS, Secretary General Jose Miguel Insulza, one of the special guests to the presidential taking office ceremony in Washington.
The United States swiftly approved on Tuesday six members of President Barack Obama's Cabinet, but put off for a day the vote on his choice of Hillary Clinton to be Secretary of State following Republican Texas Senator John Comyn objection.
Barack Obama became the United States 44th president on Tuesday assuring allies he'll rebuild the world's shattered economy while repairing strained friendships as millions cheered the apparent arrival of a new age of political idealism. He promised to leave aside the confrontational dogma and develop a more open and conciliatory relationship with the rest of the world.
Barack Obama will make history when he is sworn in as the 44th president of the United States - the first black American to hold the post.
With President Barack Obama's administration a new chapter opens and a new relation with Latinamerica begins said on Tuesday US ambassador in Argentina Anthony Wayne during a conference in Buenos Aires.
When Barack Obama is sworn in as the 44th president of the United States, the wish list that has been building abroad may have grown longer than he or anyone else can deliver.