MEMBERS of the majority caucus of the National Assembly are set for a showdown with their colleagues in the minority, over threats to take legislative measures against the President, Major General Muhammadu Buhari (retd.), for constitutional breaches. Senators of the governing All Progressives Congress, on Wednesday, dissociated themselves from the threat issued by their minority colleagues, led by Peoples Democratic Party. The PDP caucus had at a news conference, in Abuja, on Tuesday, listed the various constitutional breaches of the President. They asked him to sit up or be prepared to face legislative action. One of the constitutional powers of