We donít really know what the U.S. has been doing behind the scenes to help resolve and control this situation since it has erupted. We are only speculating. I am sure the Obama administration has been in contact with Mubarak regarding the conflict. We do not know how those discussions went. I think the Obama administration realizes there is nothing that can be done to save Mubarak at this point. Continuing to support him publically would only serve to make the U.S. look complicit with Mubarakís oppression in the eyes of the Egyptian people. That would not bode well for us with whatever administration ends up replacing Mubarak.
Although there is the chance the Muslim Brotherhood will replace Mubarak, it is more likely his successor will be someone like Mohamed ElBaradei. ElBaradei is someone the U.S. is more likely to forge a good relationship with. Perhaps the Obama administration is already working on that.
While Iím big on loyalty, I could not support a despot over the will of those he is oppressing. Perhaps the Obama administration feels the same way.