In the U.S., which amendment is often invoked in discussions of unconstitutional laws?

The First Amendment is frequently referenced in discussions about unconstitutional laws because it encompasses essential freedoms such as speech, religion, press, assembly, and petitioning the government. When a law is perceived to infringe upon these fundamental rights, it can be contested as unconstitutional based on the protections enshrined in the First Amendment.

For instance, if a law restricts freedom of speech or targets individuals based on their religious beliefs, it raises significant constitutional concerns, prompting challenges in courts. Judicial interpretations of the First Amendment have set powerful precedents that affirm the necessity of protecting these rights against potential government overreach.

In contrast, while the other amendments listed have their own important roles in protecting citizens’ rights and freedoms, they are not as directly associated with the broad concept of unconstitutional laws in the context of free expression and individual liberties. Each amendment addresses specific rights or powers; for example, the Second Amendment pertains to gun rights, the Fourth Amendment deals with search and seizure, and the Tenth Amendment relates to states' powers versus federal powers.