We are culturally conditioned to expect more from a president than we should, and what we ask for is what we will get. Thus, if we want a president who has a constitutionally limited approach to the executive branch, we have to take a constitutionally limited approach to the executive branch ourselves.
Read a constitutional guide to presidential candidates here: http://www.redstate.com/diary/sincerelyamanda/2015/03/26/ted-cruz-presidential-candidate/