People don’t support you because they like you. You can count on a person’s support only when you do something for him or something to him.

Lyndon B. Johnson (1908-1973) American politician, educator, US President (1963-69)

(Attributed)
    (Source)

On support from Congress. An "embittered" comment made to Richard Nixon after Johnson had left the Presidency. Quoted in Richard Nixon, In the Arena: A Memoir of Victory, Defeat, and Renewal, ch. 21 (1990).