The Humane Society Legislative Fund was formed in 2004 as a separate lobbying affiliate of The Humane Society of the United States. HSLF works to pass animal protection laws at the state and federal levels, to educate the public about animal protection issues, and to support humane candidates for office.

HSLF is a social welfare organization incorporated under section 501(c)(4) of the Internal Revenue Code. Contributions or gifts to HSLF are not tax deductible. Your donation may be used for political purposes, such as supporting or opposing candidates. No other national group is actively working to drive policy and to participate in elections with a sole focus on animal welfare.