United States President Barack Obama, who was not at Tuesday's ceremonies, sent a message saying that today there is "a different era in which the United States and Poland are close allies."

VOA: standard.2009.09.01

The vote was seen as a major setback for Mr.Topolanek as it came just days before a planned visit by United States President Barack Obama and midway through the rotation of the Czech Republic's European Union presidency.

VOA: standard.2009.03.25

He will be inaugurated as the 44th president of the United States, and the first black president, on January 20th.

VOA: special.2009.01.12

I, George Walker Bush, do solemnly swear... That I will faithfully execute the office of president of the United States...

VOA: special.2009.01.19

Theodore Roosevelt, who later became president of the United States, called Riis the most useful citizen in New York City.

VOA: special.2010.08.01

Last year,the top news story was the election of Barack Obama as the first African-American president of the United States.

VOA: special.2010.01.02

A year later, the president of the United States, Jimmy Carter,honored the social scientist with America's highest award for civilians.

VOA: special.2011.07.03

They chose the election of Barack Obama as president of the United States as the top news story of 2008.

VOA: special.2009.01.03

Observers say North Korea is attempting to reconnect with the United States now that it has a new president.

VOA: special.2009.08.08

The president wants the United States to regain the world's highest college graduation rates, especially in math and science.

VOA: special.2009.07.30

A year later, the president of the United States, Jimmy Carter, honored the social scientist with America's highest award for civilians.

VOA: special.2010.01.17

Roosevelt was forty-two years old -- the youngest man ever to hold the office of president of the United States.

VOA: special.2010.08.05

On March fourth, eighteen sixty-nine, Ulysses Grant traveled to Washington for his inauguration as the eighteenth president of the United States.

VOA: special.2010.02.11

On a cold and cloudy day in March of eighteen sixty-one, Abraham Lincoln became the sixteenth president of the United States.

VOA: special.2009.08.06

Presumably,he will be taking the oath of office shortly, and become the thirty-sixth president of the United States."

VOA: special.2009.08.16

On that same day, Abraham Lincoln left his home in Illinois to become president of the United States.

VOA: special.2009.07.23

The convention named former United States Senator Jefferson Davis to be president of the Confederate States of America.

VOA: special.2009.07.23

But from his office in the White House, he must also attend to his other duties as president of the United States.

VOA: special.2010.05.10

Rutherford Hayes was sworn into office as the nineteenth president of the United States in eighteen seventy-seven.

VOA: special.2010.03.11

Lincoln said only that he would faithfully execute the duties of President of all the United States.

VOA: special.2009.07.30

He also told President Karzai that the United States will make every effort to avoid harming civilians as it helps the Afghan government.

VOA: special.2009.05.09

Because of that, some people joked that Barbie could not legally become president of the United States.

VOA: special.2009.04.06

Standing in front of the Capitol, Barack Obama became the first African-American president of the United States.

VOA: special.2009.01.24

On Tuesday, Barack Obama will be sworn in as the 44th president of the United States.

VOA: special.2009.01.19

For example, the United States Constitution gives the president power to veto bills passed by Congress.

VOA: special.2010.03.11