U.S. attorney gathers up all the evidence against you
Presents it to a grand jury, 16 to 23 people who decide whether there is enough evidence to indict you
If they vote to indict you, trial begins with a new jury
If you lose your trial, you have the option to appeal to a higher court
The higher court does not have to hear your case, they will only take it if there is a significant problem with the lower court decision
Higher courts have the option to overturn or modify lower court decisions