The NAM has fought against organized labor for more than a century through affiliated organizations. However, the organization once sought to moderate its image. After the 1937 La Follette Committee investigated employers and their anti-union allies, uncovering widespread abuses, the NAM denounced "the use of espionage, strikebreaking agencies, professional strikebreakers, armed guards, or munitions for the purpose of interfering with or destroying the legitimate rights of labor to self organization and collective bargaining." The brief nod to union rights didn't last.