The "Regulatory Cooling Off Act of 2025" proposes significant amendments to title 5 of the U.S. Code, primarily focused on extending the timelines for federal agency rulemaking. Its core purpose is to introduce a 6-month delay before any final rule can take effect, a substantial increase from the current 30-day minimum. Key provisions include extending the minimum public comment period to not less than 60 days and requiring agencies to submit finalized rules to Congress at least 6 months prior to their effective date. This bill also expands the congressional review period for rules from 60 days to 6 months, allowing more time for legislative oversight and requiring agencies to post rules online 24 hours before Federal Register publication. Additionally, it broadens the options for judicial review by allowing actions to be brought in the district where the plaintiff resides or where the agency has an office.