求助 用 in support of 该如何改写这句话 出自白勇语法全解

lkl103

原句为： Where once the union had acquiesced to the prejudices of its english-speaking members by supporting the imposition of an alien tax on immigrant workers, after 1897 the united mine workers made a determined effort to enlist Italians and Slavs in its ranks.

前半句到supporting为划线句，有个选项给的是：前面不变，把 by supporting 改为 in support of 解释说是，这样的话修饰对象不单一。我想知道，如何用in support of 改写此句呢？
出自 白勇 gmat语法全解 第4页……汗，我刚开始看

谢谢各位大虾啦

aeoluseros

umm..还是别追求这样的改法了，没有什么意义...知道怎么错就好了.修饰对象不单一必然是有修饰歧义吧.

mikecello

这边supporting修饰前面的谓语动词，介词短语in support of 就做就近修饰了，逻辑上有问题。