"United Soccer League (USL) club owners voted on Wednesday for a promotion and relegation system, marking the first time the European-style system would be implemented in the United States.
USL said that league would operate completely separately from MLS, despite working under the same sanctioning by U.S. Soccer as a professional soccer league. This new league would give the USL a three-tiered pro system featuring the Division One, plus a second-division called the USL Championship and third-division USL League One."