Which of the following is a constitutional check on the president's powers?
the power to veto a law
the power to override a veto
both "a" and "b" are checks on the president's powers
neither "a" nor "b" are checks on the president's powers
the power to veto a law
the power to override a veto
both "a" and "b" are checks on the president's powers
neither "a" nor "b" are checks on the president's powers