Congress enacts laws, and the president can veto them. Congress can then re-pass them over his veto. The Supreme Court can invalidate laws created by Congress and signed by the president, but the chief executive appoints the judges with the Senate”s concurrence. The president administrates the laws, but Congress provides the money for him and his agencies. The Senate and House have absolute veto power over each other. The framers created not a government of separate power but a government of separate institutions “sharing powers.”
Congress has resorted to the concurrent resolution, or some modification of it, to assert its authority against the president, especially in connection with laws delegating powers to the president. By stipulating in the original law delegating powers to the president, the delegation is to last until rescinded by concurrent resolution. Congress is able to take away authority it previously delegated without enacting a new law, which would be subject to a presidential veto.
Under the 1973 War Powers Act, unless Congress, within 60 days, adopts a concurrent resolution, troops sent into combat by the president must be withdrawn. The impoundment act of 1974 states if the president withholds funds temporarily, he reports to the Congress and his actions can be overturned by a resolution of either chamber. But if the president impounds funds permanently, his act rescinding the appropriation is ineffective unless both House and Senate approve within 45 days. The president”s strength relies on who controls Congress and/or if the people support him.
— Kasimir Fahn, Chico