He calls the treaty a surrender of sovereignty which would punish the United States by forcing it to fund the lion’s share of a global anti-tobacco drive with no corresponding rise in influence. 请翻译全句，分解句子成分，主要解释sovereignty的定语从句的意思。谢谢。

He calls the treaty a surrender of sovereignty which would punish the United States by forcing it to fund the lion’s share of a global anti-tobacco drive with no corresponding rise in influence.

他称此为卖国条约，该条约可能迫使美国成为全球禁烟运动的最大支助国，但美国的影响力却没因此得到相应的提升。

the lion's share of 最大，最好的一块，一份.