The main purpose of this resolution is to request the Senate to return a specific bill related to courthouse construction. The bill aims to amend existing laws that govern the construction of new courthouses, specifically under certain conditions. The key provisions of the bill include limitations on when and how new courthouses can be built. While the exact details of these limitations are not provided in the resolution, the intent is to ensure that new construction aligns with specific criteria or circumstances that may be deemed necessary for effective judicial operations.