by Mark Silva and updated again at 4:10 pm EDT
Let the games begin:
President Barack Obama, who initially planned to let First Lady Michelle Obama represent the United States in Copenhagen this week, when the International Olympic Committee chooses a site for the 2016 summer games, plans to travel there too. The first couple will appear together at the venue-choosing summit, where Chicago will compete with three other cities for the '16 games.
"The gloves are off,'' Michelle Obama said today.
The White House, which earlier had announced that an advance team was headed to Copenhagen to prepare for a possible presidential trip to Copenhagen, confirmed this morning that Obama will travel Thursday night. The IOC meets Friday.
"He hopes that he can make a strong case for Chicago and America's bid for the Olympics in 2016,'' White House Press Secretary Robert Gibbs said this afternoon. " Obviously any Olympics showcases the country that those Olympics are in and there's a tangible economic benefit to those Games being here. And the president wants to help out America's bid.''
Was the president's late-breaking decision to travel prompted by any hint that his appearance in Copenhagen will help? "Well, I certainly hope that an appearance wouldn't hurt it,'' Gibbs said. "But we have gotten no intelligence on it.''
A senior administration official first told the Tribune Washington Bureau this morning that Obama will travel to Copenhagen Thursday night, and return following the Friday meeting. The first lady plans to travel Tuesday, and meet with individual members of the IOC on Wednesday and Thursday to make Chicago's case for the games. The president will join her at the full committee meeting on Friday.
"President Obama and First Lady Michelle Obama will both make presentations to the IOC during Friday's session,'' the White House said later this morning, in formally announcing the overnight trip. "They will discuss why Chicago is best to host the 2016 Summer games, and how the United States is eager to bring the world together to celebrate the ideals of the Olympic movement.''
Gibbs voiced confidence in Chicago's bid for the games this afternoon.

"Obviously the president has mentioned this at meetings when we were at the U.N. and G-20,'' Gibbs said, asked about Obama's own "behind the scenes'' lobbying for the games. "He's going to continue to talk to people, in an effort to bring the 2016 games...
"Having spent some time in Chicago, it is a perfect place to hold the Olympics,'' Gibbs said. "It offers a great place for the world to see... I think, far and away, it's the strongest bid of the four that are out there.''
What if the U.S. is not chosen? Call his assistant on Saturday, the press secretary suggested.
And as for that perennial "tomato-tomahto" question, Gibbs was asked about his own pronunciation of Obama's destination: "I say Copen-HAYGEN, but I'm not sure I should be the arbiter.''

Chicago is competing with Madrid, Rio de Janeiro and Tokyo for the 2016 summer games.
Obama isn't the only head of state going to Copenhagen
Brazilian president Luiz Inacio Lula da Silva, confident in Rio's bid, will travel to the Danish capital ahead of the IOC's vote.
"This is a fight," Lula said on his weekly radio program today. "And if we don't win, we'll have to prepare for another one. But I think we're going to return from Copenhagen with a victory." Brazil deserves the Olympics, Lula says, because South America has never hosted the games. "For the other nations, it would just be one more Olympics.''
Michelle Obama sat next to the Brazilian first lady last week at the G-20 in Pittsburgh. Obama's wife said today that she told her counterpart that she was happy to hug last week, but this week they are doing battle.
"I said, 'I'm going to hug you now and then I'm going after you.'" Michelle Obama recalled of the conversation in a meeting with reporters today. "She said, 'You, too.' So, the gloves are off."
When in Denmark...
The American president and first lady also plan to meet with Queen Margrethe II and His Royal Highness, the Prince Consort. The president also plans a meeting with Danish Prime Minister Lars Løkke Rasmussen.
The Danish media are chasing suggestions that Obama might get out for a walk-around as well, though the time-frame of the president's planned overnight trip for meetings and return Friday afternoon don't leave a lot of room for tourism. They're hearing that the president's whole presence there may be limited to five hours.
It's big news in Denmark: Obamas besøg er skåret ned til fem timer
Promoters of Chicago's bid for the 2016 games have pressed the president to take the United States' case to Copenhagen personally. And prromoters today praised the president's decision to join the first lady at the IOC meeting.
(Copen-HAYGEN, says Press Secretary Robert Gibbs, pictured above, today, at press briefing. Photo by Gerald Herbert / AP.) And President Barack Obama toyed with a light saber and Olympic fencer Tim Morehouse, who won a silver medal in Men's Saber Fencing at the Beijing Olympics, during a recent event at the White House to promote Chicago's bid for the '16 games. (Photo by Charles Dharapak / AP)