"Humane Society Legislative Fund (HSLF), an affiliate of The Humane Society of the United States, is a social welfare organization incorporated under section 501(c)(4) of the Internal Revenue Code. HSLF works to pass animal protection laws at the state and federal level, to educate the public about animal protection issues, and to support humane candidates for office." "The mission of the Texas Humane Legislation Network is to promote the humane treatment of animals through legislation, education and advocacy."