ICLEI Regional Executive Committee
ICLEI’s North American Regional Executive Committee, also known as RexCom, is a powerful force for sustainability action for the U.S. and Canada. Comprised of local elected officials from the ICLEI network, RexCom is responsible for guiding our local governments in their response to the pressing biodiversity, pollution, and climate crises.
Background
Every three years, parallel regional elections take place in all 9 ICLEI regions to elect the ICLEI Global and Regional Executive Committees. Representatives from eligible ICLEI Members can apply in their region by submitting an application, and all eligible ICLEI Members then vote, which is then followed by the ICLEI Global Executive Committee elections.
Meet the ICLEI U.S. Regional Executive Committee
2026-2030
Elections are underway for vacant seats on ICLEI’s Regional Executive Committee (RexCom). Members serve three-year terms and bring the voice of U.S. local governments to the international stage. ICLEI USA’s RexCom members work alongside ICLEI Canada representatives to collectively represent North America on ICLEI’s global, democratically elected Council.
Due to early vacancies, ICLEI members have the opportunity to elect city and county leaders to the RexCom in March 2026. The candidates below are seeking election to serve alongside the current RexCom members, Mayor Barbara Buffaloe of Columbia, Missouri, and Mayor Alix Desulme of North Miami, Florida.
Voting closes Thursday, March 26. Cast your vote today!
Lindsey P. Horvath
Supervisor, Third District, Los Angeles County, California
Climate action, environmental protection, and community resilience aren’t just priorities—they’re a responsibility. In January 2025, the Palisades Fires devastated my district, a stark reminder that climate impacts are already here. As the first millennial to represent over two million constituents, I’ve made sustainability and resiliency central to my work. When federal leadership falls short, city, county, and state governments must lead locally and collaboratively, which is why I guided our Board to affirm our commitment to climate action and expand partnerships with international groups like ICLEI.
I led the passage of the 2025 OurCounty Sustainability Plan and the 2045 Climate Action Plan General Plan Amendment, putting the nation’s largest county on a path to carbon neutrality. To ensure accountability, we created a Climate Budget, Greenhouse Gas Inventory, and Municipal Climate Action Plan.
Our district is the most disaster-prone in the nation, according to FEMA, and we are still recovering from the Palisades and Eaton Fires. I convened a Blue Ribbon Commission on Climate Action and Fire-Safe Recovery to ensure that rebuilding is sustainable, equitable, and resilient.
Water and heat resilience are critical to protecting residents. I championed the LA County Water Plan—the first unified plan for all 200 county water districts, and reformed our Safe Clean Water Program, which invests nearly $300 million annually in local water supply and quality. I also led first-in-the-nation tenant protections requiring landlords to maintain safe indoor temperatures, paired with our County Heat Action Plan to safeguard residents from extreme heat, the deadliest climate threat we face.
I’m advancing clean energy and sustainable transportation to reduce emissions. As Vice Chair of the Clean Power Alliance, we provide mostly 100% renewable electricity to over three million customers. As an LA Metro Director, I’m helping build five new underground and light rail lines, while guiding County departments on a Zero Emissions Vehicle Master Plan and Bicycle Master Plan to meet active transportation and Vision Zero goals.
Protecting access to nature is equally urgent. My district’s iconic beaches, from Malibu to Venice, face sea level rise, so I launched a Coastal Resiliency Initiative, prioritizing living shorelines to protect biodiversity and prevent erosion. We’re expanding parks, creating Urban Natureways, implementing a native plants policy at all 2,500 County facilities, and observing the UN Convention on Biological Diversity. Our Santa Monica Mountains are under threat from invasive pests, so I helped create an Invasive Pest Management Unit to protect our oak forests from the deadly Gold Spotted Oak Borer.
Climate change is the defining crisis of our time, threatening our communities, natural heritage, and the future of generations to come. As Supervisor of the nation’s most populous county, I believe we have a responsibility to meet this challenge head-on—rebuilding resilient communities, protecting our environment, and leading by example. Together with ICLEI partners, Los Angeles County can show the world that bold, equitable, and sustainable solutions are possible, ensuring our children and grandchildren inherit a safer, healthier, and more just future.
Tim Keller
Mayor, City of Albuquerque, New Mexico
I have been engaged with ICLEI since attending COP24, where I learned the organization’s global initiatives match my work at home. As Mayor of the City of Albuquerque, I worked to put our city on the cusp of becaming 100% renewable-energy powered, right now second in the nation to in progress toward achieving this goal. We’re converting our 5,000-vehicle fleet to electric or hybrid and rolled out buildings and utility optimization software across all facilities, making us the first in the country to achieve real-time monitoring on our water, gas, electric and buildings energy use. These upgrades have already reduced Albuquerque’s carbon footprint by 25%. We’re also aggressively reversing heat islands across the city, by planting 25,000 over 10 years, while advancing a circular economy through closed-loop food- and green waste systems.
After 8 years serving my City, I’m grateful to have won the gift of another term, making me the first Mayor in our city’s history to serve three terms. Now, I want to build on this achievement by engaging in areas that are most impactful, offering colleagues the opportunities for growth and policy advancement they deserve.
Internationally, I am excited to continue my work in subnational diplomacy, after development-focused engagements in Qatar, Cambodia,Turkiye, Russia, and Turkmenistan, as well as at the UNFCCC Climate COP. As a member of ICLEI’s RexCom, I will continue to learn from global cities and share my own city’s work so that the entire ICLEI network can achieve its climate and sustainability visions.
Meet the ICLEI U.S. Regional Executive Committee
2024-2027
Alix Desulme
Mayor of North Miami, FL & Global Executive Committee Mobility Seat
Mayor Alix Desulme is a visionary leader, educator, and advocate whose lifelong dedication to public service continues to shape the future of North Miami. Elected to serve another term on December 3, 2024, Mayor Desulme is driven by a steadfast commitment to improving the lives of residents and fostering a city rooted in progress, equity, and opportunity. With a background as an educator and entrepreneur, Mayor Desulme’s leadership is both dynamic and multifaceted. As a lifelong educator, he has inspired and empowered students from diverse backgrounds — from at-risk youth…to gifted learners — with his passion for education and personal growth. His entrepreneurial experience as a small business owner reflects his innovative spirit and deep understanding of the challenges and opportunities facing local businesses. Mayor Desulme’s journey in public service began with historic milestones. In 2009, he became North Miami’s first Black City Clerk and the youngest Haitian American to hold such a position in the United States. His path-breaking leadership continued in 2015, when he was elected to the North Miami City Council to represent District 4. Over the years, he has earned the trust and admiration of residents, displayed in his landslide re-election in 2019. His tenure as Vice Mayor — in 2016 — solidified his reputation as a trailblazer and an advocate for the community.
Barbara Buffaloe
Mayor of Columbia, Missouri, USA
Barbara Buffaloe is the Mayor of Columbia, MO, the fourth largest city in Missouri. She serves on the Board of Directors for the Missouri Innovation Center, and as an ex-officio member on the Board of Directors for REDI and the Columbia Chamber of Commerce.
Mayor Buffaloe is Chair of the Environment Committee of the US Conference of Mayors and will be part of a delegation representing US Mayors at COP28 in December 2023. Mayor Buffaloe is part of the 7th cohort of Mayors for the Bloomberg Harvard Civic Leadership program.
Before being elected Mayor of Columbia, she served as Columbia’s first Sustainability Manager. Mayor Buffaloe coordinated the development of Columbia’s Climate Action & Adaptation Plan that lays out a vision and strategies to address risks posed by climate change and contributes to international efforts to reduce greenhouse gas emissions. She has presented on the topics of climate action at numerous conferences, including the US Department of Energy’s Better Buildings Summit, the Midwest Climate Collective’s Climate Summit, and the Advancing Renewables in the Midwest conference.
Mayor Buffaloe serves as advisor to the Board of Directors for the Urban Sustainability Directors Network (USDN) and is past Board Secretary. Mayor Buffaloe co-founded the Heartland Local Government Sustainability Network, a network of City and County sustainability managers and directors from seven Midwestern states whose charge it is to create additional momentum for promoting sustainability throughout the Heartland. She believes in the power of regional collaboration and knows that ICLEI’s network of communities can make a difference by partnering on projects and programs together.