 Since his election to the House of Delegates, Jennings has been very active in environmental and agricultural issues.He served on Environmental Matters Committee (2003–06), the Agriculture Preservation & Open Space subcommittee (2003–06), the Wetlands & Waterways Funding Work Group in 2004, and the Natural Resources subcommittee in 2006.Jennings was the chair of the Natural Resources work group in 2004, was a member of the Agricultural Stewardship Commission from 2005 to 2006, and has been a member of the Maryland Fire, Rescue and EMS Caucus since 2003.