What are the restrictions on the first amendment's freedom of speech?

time place and loudness of speech for example loud arguing at night might be illegal where you live or blasting music exc.

obscenities, child p000rn, defamation, fraud, "fighting words" such as hate speech

Brandenburg vs Ohio the government forbid incitement speech

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.