Sen. Obama son Kennedy has kept low profile in Kennedys . Community service is the bedrock of Kennedy legacy . President Obama similar to Congress in political focus , experts say . Sen. Obama was early endorser of Obama 's presidential bid .
Sen. Ted Kennedy 's son Patrick has kept low profile in Congress . Community service is the bedrock of Kennedy legacy . President Obama similar to Kennedys in political focus , experts say . Sen. Kennedy was early endorser of Obama 's presidential bid .