...Mexmode - an assembly factory, or maquiladora - is a principal supplier of college sweatshirts to Nike and Reebok. Hearing that Mexmode workers were fired for their cafeteria boycott, leaders of an activist coalition supported by students and administrators from about 85 American colleges and universities rushed here to investigate...The group, the Workers Rights Consortium, heard complaints about low wages, verbal abuse and corruption among union officials, then began a high-profile campaign that threatened the image of the Nike swoosh.