NOTE: This answer relates to a rule proposed by REC and does not reflect current regulations in effect:
Currently, if a new authorization for a FM translator is granted, it can be immediately assigned to another entity for any value, especially when the original grantee has made no effort to physically start construction of the station. The authorization is merely "paper". Following the Auction 83 FM translator filing window, there were a significant number of these "paper" assignments for profit. Other broadcast services have this kind of anti-trafficking protections, but FM translators are exempt. Our proposed change merely closes that loophole.