Simplified: John F Kennedy championed lowering top marginal tax rate from 91 to 70 percent. Lyndon Johnson signed it into law after JFK's assassination.
Simplified: Kennedy credited with getting SEC up and running. Kennedy stepped down before newer tougher regulation went into effect according to SEC history.
Simplified: Roosevelt raised top marginal rate to 79 percent for income above $5 million. During World War II he raised top rate to 94 percent dropping threshold...