20+ years

Dennis combines his corporate and public service experience to serve clients across a broad range of industries.Dennis has previously held the position of senate sergeant-at-arms for the Mississippi State Senate and served as a staff attorney in the Senate Legislative Services office. He has also served as senior attorney for the Mississippi Public Service Commission and as a regional public affairs manager for International Paper. Additionally, he is the author of the Mississippi Chapter, Lobbying, PACs and Campaign Finance: 50 State Handbook.In addition to holding memberships and leadership positions in a number of professional organizations, Dennis is an adjunct professor of law at Mississippi College School of Law teaching the course, "Legislation."

Nathan Poss has over 20 years of experience in both the public and private sector. His focus is to provide clients with a comprehensive range of services, including: legislative drafting and tracking, policy development, governmental lobbying (at all levels), strategy development, and business procurement.



Prior to forming JohnsonPossKirby Government Relations in 2007, Nathan served as a principal at Smith Johnson & Carr, focusing on lobbying efforts for the firm's business clients and taking the lead on procurement strategies.



Before entering into the lobbying world, Nathan served seven years on Capitol Hill as a legislative assistant to then Speaker Pro Tempore of the Senate, State Senator Bob Rochelle. During his tenure with the state, he played an important part in writing and developing legislation, organizing political strategies, building coalitions, and monitoring legislation for committees. Poss has also been actively involved in numerous successful political campaigns.



Poss has built a reputation of hard work and respect among those on Capitol Hill. Working with major players in the state's business community, he has served as a key strategist on major environmental and tax issues. Nathan has garnered a reputation for producing tangible results through well-executed and intricate lobbying efforts designed to achieve long lasting success for his clients.

In addition to his lobbying successes, Nathan has extensive experience with the procurement process in Tennessee. Recently recognized by the TN Report for being known as an "expert in the state's purchasing practices," Nathan has cultivated the necessary connections with top-level decision makers throughout all areas of state government. Throughout his practice he has developed a strong grasp of the state's purchasing processes, and has successfully secured multi-million dollar purchases for numerous clients.

Nathan is a graduate of Cumberland University with a B.A. in Social Science. A native Tennessean, Nathan grew up in Lebanon and currently lives in Green Hills with his wife Molly.

Holly Salmons Kirby is a principal with JohnsonPossKirby Government Relations. She has been working on the hill and in other functions of state politics since 2000. Kirby served as an intern for the Senate Transportation Committee during the 102nd General Assembly. There she worked on key pieces of legislation such as fiber optic right-of-way for the Intelligent Transportation System and primary restraint. Kirby attended the University of Tennessee at Martin and Western Kentucky University where she received her Bachelor of Arts in Political Science. After graduating from Western Kentucky, she served as one of the field coordinators for Andy Womack's gubernatorial campaign. In this capacity, she managed all volunteer efforts, coordinated supporter databases, and assisted the candidate at events across the state.

Holly began her lobbying career when she interned for the firm of Smith Johnson & Carr in 2002. She returned to the firm as an associate for Bo Johnson in 2003. In this capacity, she worked on many issues ranging from outdoor advertising and railroads to manufacturing and alcoholic beverages. In 2006, Kirby worked with key legislators and railroad representatives to pass legislation strengthening the railroad trespassing laws.

In 2007, Holly accepted the position of Senior Associate with the new firm, JohnsonPoss Government Relations. In this capacity she continued to focus on the wide range of business issues she had worked on previously while expanding her work scope to include a variety of education issues. In 2010, Holly accepted the offer to become a principal in the firm.

Elliott Flaggs joined Cornerstone's Jackson office in October 2015. He most recently served as a special assistant attorney general with the Mississippi Attorney General's Office in the capacity of legislative liaison for Attorney General Jim Hood and director of the Child Desertion Unit. His responsibilities included analyzing and advocating legislation impacting state citizens and the Mississippi Attorney General's Office, advising the executive staff on legislative strategies, and making recommendations regarding legislative proposals. He also prosecuted parents for child neglect and abandonment in the Public Integrity Division.

Prior to the Mississippi Attorney General's Office, Elliott attended Mississippi State University where he received a bachelor's degree in industrial and systems engineering (B.A., 2007). After graduation, he was accepted into the Congressional Black Caucus Foundation - Walmart Emerging Leaders Program where he worked on Capitol Hill in Washington, D.C. for Congressman G.K. Butterfield (North Carolina - District 1). Subsequently, he attended The University of Mississippi School of Law and graduated cum laude (J.D., 2012). During law school, he was a member of the Mississippi Law Journal and Dean's Leadership Council while also serving as a Law School Student Body Senator.

Furthermore, Elliott is an active member of the Mississippi Bar Association, Jackson Young Lawyers, Magnolia Bar Association, the Charles Clark Inn of Court and Jackson Professional Group. He is an incorporator and board member of The First Tee of Central Mississippi in Jackson, MS. He is also a 2015-16 graduate of Leadership Greater Jackson and now serves on their board of directors. In addition, Elliott has been recognized as an American Cancer Society - Best Dressed Jackson honoree as a result of his community service efforts and by the Clarion Ledger as a Top Politician and Politico Under 35 in Mississippi.

Elliott and his wife, Brittany, reside in Madison, MS with their daughter, Lianne.

Drew Maddox joined the Cornerstone Mississippi team in February 2020 as a vice president with more than 10 years of experience in finance and education policy. Previously, Drew served as the chief financial officer of the Mississippi Department of Revenue, where he oversaw all administrative divisions of the department, including accounting, communications, processing, information technologies and logistics. As CFO, Drew also worked closely with state legislators and statewide elected officials to guide tax policy decisions, liquor laws, and revenue-generating activities.

Prior to his time at the Department of Revenue, Drew also worked as director of state engagement at EdBuild, where he used his knowledge of political and governmental structures to strategically place educational reform proposals in the best positions for success in state legislatures across the country. Drew has also worked at the Mississippi Legislative Budget Office as the Senate budget officer, where he worked closely with leadership to craft and pass balanced budgets.

Drew received his Bachelor of Arts in English literature and his Bachelor of Business Administration degrees from Millsaps College in Jackson, Mississippi. Drew enjoys spending time with his wife and two children (Sam and Bee), baseball, and gardening.

20+ years

Camille Young brings almost two decades of background in the practice of state and federal government affairs to Cornerstone's Jackson, Mississippi office. Prior to joining Cornerstone, Camille spent 10 years as a government affairs representative with one of the State's leading law firms, Watkins Ludlam Winter & Stennis, P.A.

Prior to that, Camille spent five years at the Mississippi Farm Bureau Federation in several positions, including communications specialist, director of media relations and government relations specialist. During her time at Farm Bureau, she also spent time on Capitol Hill establishing relationships and providing support for the agricultural community. She also held a position with the United States Department of Agriculture as an outreach and public affairs specialist.

At Watkins Ludlam, Camille worked for the state and federal legislative interests of clients as varied as an institution of higher learning, a major automotive manufacturer, associations that represent constituents in every county of the state and healthcare entities. In addition to her Capitol lobbying tasks, Camille provided significant support to clients in areas of public relations and community relations.

Mississippi Governor Haley Barbour tapped Camille to serve as a museum liaison for the Mississippi Civil Rights Museum project that joined public and private sponsors to launch the venture that will honor Mississippi's history in the Civil Rights Movement.

Camille is very involved in community activities like the Greater Jackson Chamber Partnership Board of Directors, the Junior League of Jackson Sustainers Board of Directors, Alpha Kappa Alpha Sorority, Incorporated and the Mississippi 4-H Foundation. She also was honored to serve as President of the Mississippi State University National Alumni Association in 2012-13.

Camille has been honored for her professional accomplishments and service to the community as a member of the Mississippi Business Journal's Top 50 Business Women (2006) and Top 40 Under 40 (2005). She was named a Woman of Distinction by the Girl Scout Council of Middle Mississippi and Alumnus of the Year by the Central Mississippi Chapter of the MSU Alumni Association. She also is a member of the BankFirst Board of Directors and the inaugural class of Top 50 Most Influential People in Mississippi.

Camille grew up in Shannon, MS, and graduated from Mississippi State University (B.A., 1994 and M.S., 1996).

Camille and her husband Keith are the proud parents of three children and enjoy living in rural Madison County. Camille is an active participant in her church, community and the school activities of her children.

Prior to joining JohnsonPossKirby in 2017, Luke served Capitol Hill in the Tennessee General Assembly, the Department of Finance and Administration, and the Office of Governor Bill Haslam.

Luke began working in politics in 2009 for Representative Pat Marsh and then joined Governor Haslam's office in February of 2011. During his tenure there, Luke helped shepherd the Governor's signature legislation through the legislative process. These initiatives include teacher tenure reform, tort reform, the TEAM Act, the Prescription Safety Act, and TN Promise to name a few. In 2015, Luke left the Governor's office to join Commissioner Larry Martin and the Department of Finance and Administration.In his role as Legislative Liaison, Luke was responsible for communicating with the legislature on behalf of Commissioner Martin and the divisions within the department. Luke worked with the Commissioner, Strategy Technology Solutions (STS), Benefits Administration, and the Division of Budget to achieve the department's goals and facilitate a strong working relationship between the department and General Assembly.

In addition to his work with the F&A divisions, Luke played a role in preparing the Governor's Budget and advocating for its approval in the General Assembly. These budgets included the largest tax cut in state history, two debt free budgets, and significant investments in recruiting jobs.Luke and his wife, Katie, live in Franklin with their two daughters, Ryall and Mackie.

Trammel began his time in Tennessee State politics as a key legislative liaison for the Department of Finance and Administration under Governor Haslam. During this time, he worked on the state's budget process, information systems and insurance plans and served as a vital link to the General Assembly on several topline legislative priorities.

Trammel transitioned to the private sector after the Haslam Administration to serve as a senior government relations advisor at Butler Snow. There he leveraged strategic procurement to create open channels of communication with top decision-makers and lobbied a variety of issues including health care, insurance and telecommunications.

Trammel is an alumna of the University of Tennessee–Knoxville, where he graduated magna cum laude and received his law degree from the University of Memphis. He has been listed among Ones to Watch in government relations practice by Best Lawyers in America®.

Originally from Brentwood, Trammel lives in Franklin. Outside the office, you can catch him at one of his kids' sporting events or out on the golf course.