Within employment, economic opportunities for blacks were routed to the lowest-status and restrictive in potential mobility. In 1900 Reverend Matthew Anderson, speaking at the annual Hampton Negro Conference in Virginia, said that "...the lines along most of the avenues of wage earning are more rigidly drawn in the North than in the South. There seems to be an apparent effort throughout the North, especially in the cities to debar the colored worker from all the avenues of higher remunerative labor, which makes it more difficult to improve his economic condition even than in the South." In the 1930s, however, job discrimination ended for many African Americans in the North, after the Congress of Industrial Organizations, one of America's lead labor unions at the time, agreed to integrate the union.