joey, if out of a cast of thousands they have identified YOU as the person they most want to either transfer to a new position or shove out the door, they are perfectly fee to do that. Just 'cause you don't want to go or don't think it's fair, doesn't make it illegal.
The only time legalities would crop up would be if they were selecting you for the transfer BECAUSE of your age, race, religion, gender, handicap, etc. I doubt that's the case so either start packing your bags or start looking for a new job.