How are presidential powers limited by Congress?

The limitation of presidential powers is suggested not only by what the president can do but also by what Congress can do. One example is that the president can propose war (U.S. Const., Art. II, Sec. 3), but only Congress can declare it (U.S. Const., Art. I, Sec. 8). A second example is that the president can make treaties only when 2/3 of the Senate agree (U.S.Const., Art. II, Sec. 2).