“If I recall, Bush did it all the time, too.”
In fact Ford, Bush and Obama all have had pictures taken with their feet on the desk in the oval office. Other Presidents may have been guilty of this as well, but no photographer seems to have caught them in the act.
http://www.snopes.com/politics/obama/photos/desk.asp
Bush’s feet-up photos were not released by the White House with the statement that he was talking to a foreign head of state. Especially one in the Middle East whose enemies know the shoe sole being shown by the muslim POTUS is an insult.
Now, I guess we never did a get a photo of Clinton talking on the phone to a VIP, with Monica’s face in his lap, did we...