By CBS News White House Correspondent Mark Knoller

(Pete Souza)
Barack Obama promised change and on his first morning as president he delivered. He appeared at the Resolute Desk in the Oval Office in his shirt sleeves.
It was part of the story yesterday on the front page of the New York Times – meant to show that Mr. Obama has brought a shift in presidential style and habits to the White House.
His top aides didn’t try to conceal the new president’s less formal dress code. On the contrary, the White House released a photograph of it (above).
It’s only worth noting because for the last eight years, Pres. Bush made it a standing order that he and his staff would always wear their suit jackets in the Oval Office.
“It’s a huge honor to walk in the Oval Office,” President Bush would often tell people. “It’s hard for me to describe what an honor it is.” Though even early in his presidency, he did not think the sanctity of the room would suffer if one of his dogs came into the room.
“Spot was born in the White House in 1989 when my dad and mother were up here, so she's quite comfortable with the surroundings,” said Mr. Bush in 2002 when his new Scottish Terrier Barney was still a pup.
“They don’t let Barney in. It’s a new carpet and Barney’s a new dog.” But in later years, Barney was a frequent companion to Mr. Bush in the Oval Office.
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