What are the Executive powers of Congress?

This following statement is true but irrelevant, for answer look below.

Congress has no Executive power. It is the Legislative branch; the Executive branch would include the Presidency. There are several checks and balances between the two(The president leads the army, but only Congress can declare war, etc.), but they are essentially separate. When the Framers were creating the Constitution, they decided against a Unitary form of government(where the 'president' is elected by and comes from the 'congress') because they felt it could lead to the same tyranny that they had just finished fighting against, thus they made the Executive and Legislative branches wholly separate and equal.

Actually the powers this question is probably referring to is the ability to approve presidential appointments and the ability to approve treaties. suck it