You do not go anywhere to start cancellation of removal. Cancellation of removal is a defense to deportation. You will have to have been put in removal proceedings by ICE before you can ask for it.
Some people ask ICE to begin removal proceedings against them when they are sure they have an excellent case and run the risk of removal (deportation) if they are wrong, but ICE is not obliged to bring removal proceedings, and often ignores such requests, leaving people in limbo.
Answered on Dec 14th, 2010 at 5:58 PM