The only major objection came from Justice Antonin Scalia,who offered an even more robust defense of state privileges going back to the Alien and Sedition Acts.
黑色部分充当句子的什么成分，该如何理解以及翻译？
现在分词短语going back to the Alien and Sedition Acts是state privileges的后置定语，相当于定语从句which go back to the Alien and Sedition Acts。
