Miguel Blanco Period 4 Clinton vs New York (1988)
What this court case did was it struck down the Presidential Use of the Line Item Veto as an unconstitutional delegation of legislative authority to the President.
The Supreme Court ruled that the line-item veto violated the Presentment Clause of the Constitution because it gave the President the power to amend or repeal parts of statutes that had been already passed by Congress.
Before the Clinton vs NY. President Clinton exercised his powers by cancelling the Balanced Budget Act which affected New York. After this many appellees and Private organizations challenged constitutionality of cancellations.
This is significant because since then the President can not cancel any more laws and Congress does not need to worry about that anymore.