Equal partners in govt. Both are in charge, but the president sets the agenda, and the Sentate is supposed to enforce. President nominates judges, sets energy policy, foreign policy. The Senate has to approve it. so far he's done little to convince them.
You Sir, appear to be reading the United States Contitution the way you want it to be. The Founding Fathers did not ever intend for the President whoever he is to be in equal status with the elected legistlature.