Indiana has a General Assembly aka: Part-Time Legislative Branch. They meet in meet in the winter into spring. Summer session is like extra homework with a laundry list of requirements/hoops that have to be done to advance a bill through.
It is meant as a way to give important laws a chance to be fully debated by all sides and compromises reached. In practice most bills never survive summer session and most reps very much dislike being forced to perform their duties in the summer.
Thank you for the explanation Hoosier. I'm assuming we aren't at the point where summer session is possible. I wish I knew more about this whole process.