Bush will start testing the new Congress as soon as he can. He will claim the power to do something beyond the normal range of the Executive, and it will be nothing anyone should make a constitutional crisis over. Congress will let him get away with it.
Mickeleh's Take: Bush took a conciliatory tone today, but there is a huge body of "singular executive" doctrine floating around his presidency. Congressional Democrats--and all of us--should hope for the best, but prepare for the worst.