The man who mugged actor Kal Penn has been sentenced to three years behind bars.
 
Marcellus Chambers pulled a gun on the movie star when he was working as President Barack Obama's Associate Director of the White House Office of Public Engagement in April, 2010.
 
The thief made off with cash and Penn's government issued cell phone, according to TMZ.com.
 
Chambers pleaded guilty to felony counts of robbery and assault with a deadly weapon.