The Judicial Branch. In other words, the Supreme Court. This precise act wasn't delegated specifically by the Constitution, but was a lasting effect of the case Marbury v. Madison.
The Judicial Branch has the power to declare the acts unconstitutional.
The Judicial Branch can declare an act of the President unconstitutional.
The judicial branch can declare acts unconstitutional and can also declare laws unconstitutional.
The Judicial branch declares acts or actions to be unconstitutional.
Judicial branch
It can declare acts of the president unconstitutional
judicial
It can declare acts of the president unconstitutional
The courts can declare presidential acts unlawful or unconstitutional, if they see it to be unlawful or unconstitutional.
Because courts may declare acts to be unconstitutional
Both Legislative and Executive Branch :)
courts may declare acts of congress to be unconstitutional