And to have the assistance of counsel for his defense
This ties back to Miranda rights.
You have the right to remain silent. Anything you say or do can and will be used against you in a court of law. You have the right to an attorney. If you cannot afford an attorney, one will be appointed to you.
Although Miranda rights refer specifically to police questioning, one is guaranteed the option of counsel throughout the entire legal process.
The defendant may also elect to represent his or her self in trial.
To help improve the meaning of these lyrics, visit "The U.S. Constitution (Bill Of Rights)" by United States Congress (Ft. James Madison & Thomas Jefferson) and leave a comment on the lyrics box