A. Mario Castillo founded Aegis after having served as chief of staff of the Committee on Agriculture of the U.S. House of Representatives. Mario's experiences while serving the Committee have contributed to Aegis' ability to protect, and/or augment, clients' national and global commercial holdings in various industries such as pharmaceuticals, food commodities, retail, travel and tourism.

No stranger to complex negotiations, Mario successfully negotiated and established the first intercollegiate agreement between a Czech Republic university and a prominent American university, Texas A&M University.  Under the auspices of President Havel, Mario successfully negotiated commercial ventures between American and Czech interests in diverse commercial arenas.

Additionally, he has served as a Commissioner of the Arts and Humanities for the District of Columbia. Through the D.C. Commission on the Arts and Humanities, he developed the Larry Neal/Pen Faulkner Writers Conference for the eastern seaboard, a landmark effort to bring together writers of all races in a working environment. He has served as Chairman of the Friends Council of The National Museum of Women in the Arts of Washington, D.C. He is a former member of the board of directors of the San Angelo Museum of Fine Arts in San Angelo, Texas. 

As a leading-edge educator in Texas, Mario was the recipient of the Ford Foundation's "Washington Internships in Education." He was named by the Congressional Hispanic Caucus as one of the top 25 Hispanic leaders in the United States. And, served as a Congressional delegate to The Ditchley Foundation’s conference in Oxford, England, on International Problems of Supply and Demand in Agriculture. As a result of his many professional accomplishments and his philanthropic endeavors, Angelo State University, located in San Angelo, Texas, awarded Mario its Distinguished Alumnus Award.  Additionally, Mario has being a commencement speaker for the Texas Tech University System at Angelo State University. 

Mario was appointed at the end of 2004 by Texas Governor Rick Perry to serve as a board member for the Texas Small Business Industrial Development Corporation (TSBIDC), which was created by the Texas Legislature to provide low cost, long-term financing for Texas corporations and to support infrastructure financing (including job training) to Texas communities. TSBIDC has a multi-million dollar lending portfolio. In January 2007, Governor Perry named Mario as Chairman and President of the Corporation. Mario served in that capacity until August, 2015. TSBIDC Program Overview and FAQ Sheet.

In December 2007, Governor Perry appointed Mario to the Texas Historical Commission (THC), a 17 member board, for a term of six-years.  The THC is the state agency for historic preservation. As a THC Commissioner, Mario and the other Commissioners consult with, and provide guidance, to citizens and organizations in order to preserve Texas' architectural, archeological and cultural landmarks. The agency is recognized nationally for its preservation programs.


Matthew D. Milhauser, Political Affairs Manager, the Aegis Group, Ltd.

Prior to working with the Aegis Group, Ltd., Mr. Milhauser served as political advisor for various political officials in Texas. During this time, he assisted with the planning and development of various economic development initiatives. In 2008, Mr. Milhauser served as a city representative, of San Angelo, Texas, assisting in the facilitating of Texas State Historical Commissioners and other key Texas State officials to draft legislative initiatives for community economic development by the Texas State Legislature.

In addition, Mr. Milhauser developed and coordinated community functions for various municipalities in Texas, managed strategic voter outreach programs and targeted media campaigns and assisted in diplomatic missions to Washington, DC for state university interests. During a 2009 emergency mayoral election in Texas, Matt assembled and managed a team of skilled political professionals on behalf of an Aegis client in campaign areas including: media strategy, speech writing, voter outreach initiatives, ground strategies for prospective voter acquisition, data and polling analysis, social media integration, etc.

Currently, Mr. Milhauser provides expertise in traditional and digital communications and new media integration for Aegis’ political and business clients. Working with senior Aegis staff, he is active in assessing client needs and service delivery options. Additionally, Matt oversees the development of online public campaigns that target state and Federal agency officials as well as elected officials on behalf of the firm’s clients. Working closely with Aegis’ CEO Mario Castillo, Mr. Milhauser assists in identifying business development initiatives for the firm.

Mr. Milhauser received his BBA in Management Information System (Magna Cum Laude) from Angelo State University (San Angelo, Texas) and his Masters in Strategic Legislative Affairs from The George Washington University (Washington, D.C.). Matt is an active alumnus of the Pi Kappa Alpha fraternity and is also an inducted, lifetime member of the prestigious Alpha Lambda Delta and Alpha Chi National Honors Societies. 


Graham White, Legislative and Research Assistant, the Aegis Group, Ltd. 

Prior to working with the Aegis Group, Ltd., Mr. White worked in the fields of public relations, communications, and marketing at the Voice of America, the Pacific Council on International Policy, and the Foundation for Second Chances, respectively.  

In addition, Mr. White developed lesson plans and classroom activities as an English Kindergarten teacher in Beijing, China during the 2010 and 2011 academic calendar. After returning state side, Graham fine-tuned his programming and content management systems skills, including HTML, WordPress, Google Analytics, and Raiser’s Edge.  

Currently, Mr. White supports the Aegis Group activities with robust data mining and research. Additionally, Graham acts as a legislative liaison to the US-India Congressional Caucus in his role at the Aegis Group. Working closely with Aegis’ CEO Mario Castillo, Mr. White assists in identifying data that serves as pressure points for the firm’s benefit in dealing with Congress and the Indian Government.

Mr. White received his BA in Chinese and Economics from Wake Forest University (Winston-Salem, NC) and his Masters in Public Diplomacy from the University of Southern California (Los Angeles, CA). Graham is an alumnus of Theta Chi Fraternity.

Jim Davis, Director of Aegis’ Eastern European office, is based in Kiev. As a seasoned political and business liaison, Jim has served as a strategic business advisor and press secretary in such locales as the Czech Republic, Washington DC, and Kiev.

Mr. Davis has a proven ability to operate in pressure situations, successfully handle multiple competing priorities, and possess a high level of discipline while displaying a high degree of flexibility and professionalism. 


 In Tribute to Our Valued Colleague  ~  James P. Eichstadt  ~  1953 - 2015

 James P. Eichstadt, served as Senior Manager of Public Affairs and Trade Policy for Aegis and the head of the Madison, Wisconsin field office.  He was a seasoned professional with extensive experience in the agricultural, trade, transportation and energy sectors. He worked in a bipartisan manner on a wide range of complex domestic and international issues and played a leading role in the development of coalitions to advance clients’ interests. Prior to joining Aegis, Jim worked with rail transport, water policy and energy issues affecting northern states bordering Canada.

Jim had extensive expertise in dealing with news media on a state, national and international level. He exceled in communicating complex policy issues in concise, user-friendly terms to diverse audiences, including agricultural producers, consumers, the news media, lawmakers, and executive and regulatory officials. Internationally, he was interviewed by the BBC World Service and by several Japanese news organizations as an expert source on trade negotiations.

Jim was appointed to a three-year term on the Agricultural Policy Advisory Committee for Trade, the senior-level industry group advising the Secretary of Agriculture and the U.S. Trade Representative on critical agriculture trade negotiations at the World Trade Organization. He participated as an official U.S. advisor at the Seattle Ministerial Conference in 1999 and as a non-governmental organization representative at the Singapore Ministerial and Geneva Ministerial WTO conferences held in 1996 and 1998, respectively.

His wisdom and wit are greatly missed by the Aegis team and its clients.