Definition: In this task, you are given a text of the article. Your task is to generate a headline (title) for this article.
Input: in the second scandal this year involving alleged illegal union donations to the former ruling party , an opposition senator filed a complaint wednesday claiming that money diverted from a rail workers ' union membership fund wound up in the #### campaign of former president ernesto zedillo .

opposition senator accuses union of illegal contributions to former president 's #### campaign