The most important duty and power of the president in Taiwan is that of nominating people to positions of responsibility. When it comes to nominating members of the Council of Grand Justices, the president nominates an individual and once the nominee is approved, he or she becomes a grand justice.
Once appointed, grand justices are free to perform their duties independently, without any interference from the president. In other words, if the president displays poor judgment in nominating grand justices, it is both a dereliction of duty and it shows incompetence.