Question

请分析句子语法结构及成分。

The question in every case is whether the words used are used in such circumstances and are of such a nature as to create a clear and present danger that they will bring about the substantive evils that the United States Congress has a right to prevent. It is a question of proximity and degree. When a nation is at war, many things that might be said in time of peace are such a hindrance to its effort that their utterance will not be endured so long as men fight, and that no Court could regard them as protected by any constitutional right.

Answer 1

为方便理解，第一个句子可以简化为：
The question is whether the words are used in circumstances and are of a nature as to create a danger that they will bring the evail that US congress has a right to prevent.

The question 是该句的主语部分，后面的一系列内容是该句的谓语部分。
该句为主系表结构，whether......是一个表语从句
in such circumstances作used的状语 as to create a clear and present danger....即目的状语
that they will bring about the substantive.......是一个大的定语从句
在该大定语从句中 that the United States Congress has a right to prevent是修饰evils的定语从句

第二个长句：
When a nation is at war, many things that might be said in time of peace are such a hindrance to its effort that their utterance will not be endured so long as men fight, and that no Court could regard them as protected by any constitutional right.

many things that might be said in time of peace 是主语部分 后面一系列内容即谓语部分

When 引导一个条件状语从句
that might be said in time of peace做many things的后置定语
are such.....that....that引导一个结果状语从句

希望对您理解这些句子有所帮助