The Free Exercise Clause is a provision in the First Amendment of the U.S. Constitution that protects individuals' rights to practice their religion freely without government interference. This clause ensures that citizens can express their beliefs and engage in religious practices, provided they do not violate public order or the rights of others. The Free Exercise Clause is often examined alongside the Establishment Clause, which prohibits the government from establishing a national religion, making them both critical components of religious freedom in America.