Hoover's relations with latin America differ from those of his predecessors because he supported much more friendly relations with Latin America, making it easier the 'good neighbor' policy of his successor, unlike his predecessors who seem to had bad relationship with their neighbor<span />
Mental breakdowns happen to ppl who have something mentally wrong with them and they would need help with that. It is common with serial killers and first time murderers.
Today congress grants the president a leadership role in proposing legislation. At the same time members of congress feel free to debate modify and pass or defeat anything the president proposes.