其中教师工会在拉丁美洲的规模首屈一指，而石油工会的财力则在拉丁美洲富甲一方，更有甚者，社会安全员工联盟年复一年地阻挠着有关退��和医疗改革的一切尝试。
The teachers’ union is the largest in Latin America, the oil workers’ union is the richest in Latin America, and the social security employees union has thwarted any attempt at pension or health reform for years.