The Constitution does not explicitly indicate the pre-eminence of any particular branch of government. However, James Madison wrote in Federalist 51, regarding the ability of each branch to defend itself from actions by the others, that "it is not possible to give to each department an equal power of self-defense. In republican government, the legislative authority necessarily predominates."
Try to answer this question if possible (otherwise reply "unanswerable"): Who wrote in the Constitution that legislative authority is predominate?
unanswerable