Scholars can submit an advisory opinion request to the U.S. Department of State if they feel that the U.S. Embassy has wrongly determined that they are subject to the 2 year home residency requirement or if the applicability of the residency requirement is unclear. Instructions are provided on the U.S. Department of State website here: https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/advisory-opinions.html
Scholars can consult with DCISS in obtaining a support letter. DCISS can provide a support letter only if in agreement that the scholar should not be subject to the 2 year home residency requirement. Appointment with a J-1 counselor is required.