Answer:
. find it unconstitutional because it is too broad.
Step-by-step explanation:
When a certain law is to broad, it will be extremely hard for the government to enforce the law.
An object is considered as a 'Body armor' if it can somehow can absorb the damage of a physical attack. This could cover wide variety of objects.
For example, a police vest with complete helmet is considered a body armor. But, wearing extremely thick layered jacket could also considered as a body armor since it also absorb physical attack.
This make the law proposed by the congress hard to enforce. Thye need to make the working become more specific.