Identify and describe three of the roles that a president must play during his or her tenure in office

The president of the United States must perform a multi-task job, taking on many roles. For this discussion, complete the following:

Identify and describe three of the roles that a president must play during his or her tenure in office (for example, commander-in-chief).

Looking closely at the presidencies of George W. Bush and Barack Obama, provide one specific example from each man’s presidency in which he fulfilled a role as president in a successful manner and one example where his effectiveness was an issue.