When state and federal laws differ, which law takes precedence?

In situations where state and federal laws differ, the principle of preemption comes into play, which is determined by the context of the laws in question. When it comes to environmental regulations and pesticide application, generally, the more restrictive law takes precedence. This is because states are allowed to impose stricter regulations than those established at the federal level. As a result, if a state law provides a greater level of protection for health or the environment than federal law, the state law is enforced. This gives states the ability to address specific local concerns that may not be adequately covered by federal legislation. Therefore, opting for the more restrictive law ensures that higher standards of safety or environmental protection are maintained.