You can choose to go where ever you want in the U.S. I'm graduating from MCTC at the end of the month, so I've been updated with most of the hiring things. They are changing from choosing two states to choosing a region or choosing "anywhere". A region contains anywhere from 4 states to 6 states.. it varies. This is how they used to do it up to a few years ago when they went to states with all the PUBNATs. Anyways, you can go anywhere you want. Just be prepared to be at your first facility for a number of years. It depends on facility type, staffing, etc. on how long they require you to be there after you obtain your CPC. Current controllers can answer more questions on that aspect.
Any other questions, feel free to ask!