In terms of personality, I'd say that some presidents are definitely more user-friendly than others. How do you even go about measuring such a thing? Nixon certainly liked to use presidential power aggressively. He was still committed to the idea that the job of a president was to preside and was to try to work out deals with Congress on problems of the day. Nixon still understood, at some level, the importance of governing.
The president of the USA is someone who is clearly not a fan of foreign policy.
( z0 fan :ARG1-of ( z1 clear ) :domain ( z2 someone :ARG0-of ( z3 have-org-role :ARG1 ( z4 country :name ( z5 name :op "USA" ) ) :ARG2 ( z6 president ) ) ) :polarity - :topic ( z7 policy :ARG2 ( z8 foreign ) ) )
(z0 / fan
    :ARG1-of (z1 / clear-06)
    :domain (z2 / someone
                :ARG0-of (z3 / have-org-role-91
                             :ARG1 (z4 / country
                                       :name (z5 / name
                                                 :op1 "USA"))
                             :ARG2 (z6 / president)))
    :polarity -
    :topic (z7 / policy-01
               :ARG2 (z8 / foreign)))
The president of the USA is someone who is clearly not a fan of foreign policy .
z3 :ARG2 z6
z3 :ARG1 z4
z4 :name z5
z5 :op1 1
z2 :ARG0-of z3
z0 :polarity 0
z0 :ARG1-of z1
z0 :domain z2
z7 :ARG2 z8
z0 :topic z7