The Obama administration is pushing the Egyptian government to present a "clear timeline" for the political change that will include President Hosni Mubarak's exit -- even while Obama officials try to assure that the process is orderly and doesn't present an opportunity for one repressive government to be replaced by another repressive government. The push for a clear timeline was made on Saturday by Vice President Biden in a phone conversation with Egyptian Vice President Omar Suleiman. Senior administration sources tell ABC News that the president is trying to thread the needle -- not pushing Mubarak out too soon, before...