For much, if not most of our history, we allowed ourselves to be governed by the common law (judge made law). We still do to a lesser extent, as it is the courts which interpret the law. Some think it best if our representatives just put their feet up on their desk and sip mint juleps for the 90 days or so that the legislature meets every two years. But that is an unreasonable wish. There is much that needs addressing which cannot be addressed by the Courts, particularly when it comes to allocating money to schools, highways and the like. Normally, some of the new laws go into effect immediately upon passage (and, if appropriate) signed by the Governor. Others have a a specific effective date and still others go into effect at the beginning of next year (2020). So be careful. If you are going to rely on a new law, first make sure it has become effective.