Marisa is honored to have recently established grant eligibility with the American Horse Trials Foundation. By making a tax-deductible contribution to the AHTF, you will be helping Marisa and Big Tyme achieve their dream of representing the U.S. Donations are 100% tax-deductible according to IRS Code Section 501(c)(3). The AHTF was established in 1987 to assist 3-Day Event riders and organizers in raising tax-deductible financial support for national and international competition. In 1996 the bylaws were revised so that the foundation could assist riders competing in the related disciplines of dressage and show jumping.