Hispanic Leadership Network is a pro-illegal immigration, GOP-leaning group whose Executive Director is Jennifer Sevilla-Korn (hispanicleadershipnetwork.org). Part of the American Action Network (see the link).
Before HLN, Korn was involved in various positions relating to George W Bush: Director of Hispanic and Women’s Affairs in the White House Office of Public Liaison and Director of the Office of Intergovernmental Affairs at the U.S. Department of Justice in his administration and National Hispanic Director and Southwest Coalitions Director for his 2004 reelection campaign.
Per their about page (see all the links for more information):
Their 2012 conference featured (affiliations including as per ):
Fred Malek, Founder and Board Member, American Action Network
Senator Norm Coleman, Chairman of the Board, American Action Network
Carlos Gutierrez, former U.S. Secretary of Commerce
Jennifer S. Korn, Executive Director, Hispanic Leadership Network
Rep. Ileana Ros Lehtinen, (FL-18)
Jorge Plasencia, Chairman and CEO, Republica
Senator Marco Rubio (FL)
Douglas Holtz Eakin, President, American Action Forum
Secretary Elaine Chao, former U.S. Secretary of Labor
Pablo Chavez, Director of Public Policy, Google corporate
Cari Dominguez, Board of Directors, Manpower Inc.
Governor Luis Fortuno, Puerto Rico
Mitt Romney (guest speaker)
Alex Acosta, Dean of College of Law, Florida International University
Adam Putnam, Commissioner, Florida Department of Agriculture
Margaret Spellings, former U.S. Secretary of Education (definitely see her link)
Brian Walsh, President, American Action Network
Ed Gillespie, former White House Counselor to President George W. Bush
Maria Cino, Vice President of Government Relations, Pfizer, Inc.
Alex Castellanos, Purple Strategies and CNN Contributor
Rosario Marin, former U.S. Treasurer
Ruben Navarrette, Nationally syndicated columnist
Lincoln Diaz Balart, former Congressman, (FL-21)
Note: HLN doesn't appear to be linked to the similarly-named Hispanic Leadership Fund.