Every week, the TDN posts a roundup of the relevant Horseracing Integrity and Safety Act (HISA) related rulings from around the country.The following rulings were reported on HISA's “rulings” portal and through the Horseracing Integrity and Welfare Unit's (HIWU) “pending” and “resolved” cases portals.Resolved ADMC ViolationsDates: 06/01/2026Licensee: Jesus Romero, trainerPenalty: Disqualification of Covered Horse's Race results, including forfeiture of all purses and other compensation, prizes, trophies, points, and rankings and repayment or surrender (as applicable); a fine of $500; imposition of 1.5 Penalty Points.Explainer: Medication violation for the presence of Dimethyl Sulfoxide (DMSO)–a class C controlled substance–in a sample taken from Luckforyou, who finished second at Aqueduct on 4/10/26.Dates: 06/01/2026Licensee: Leslielyn Hardesty, trainerPenalty: Disqualification of Covered Horses' Race results, including forfeiture of all purses and other compensation, prizes, trophies, points, and rankings and repayment or surrender (as applicable); Treated as 1 violation with That's My Cat's 03/01/26 violation and Stormey Monday's 03/08/26 violation under 09/08/23 HISA Guidance.Explainer: Medication violations for the presence of Methocarbamol–a class C controlled substance–in samples taken from That's My Cat, who finished fifth at Tampa Bay on 3/25/26, and who won at Tampa Bay on 3/1/26; as well as from Stormey Monday, who won at Tampa Bay on 3/8/26.Dates: 05/29/2026Licensee: Jamie Ness, trainerPenalty: A fine of $500; imposition of 1.5 Penalty Points. Final decision of HIWU.Explainer: Vets' list medication violation for the presence of Dantrolene–a class C controlled substance–in a sample taken from Irish Exit on 4/18/26.Dates: 05/29/2026Licensee: Domenick Schettino, trainerPenalty: Disqualification of Covered Horse's Race results, including forfeiture of all purses and other compensation, prizes, trophies, points, and rankings and repayment or surrender (as applicable); a fine of $500; imposition of 1.5 Penalty Points. Final decision of HIWU.Explainer: Medication violation for the presence of Dexamethasone–a class C controlled substance–in a sample taken from That'sthefactjack, who finished seventh at Aqueduct on 4/3/26.Pending ADMC Violations06/03/2026, Roshan Samsunder, trainer: Pending medication violation for the presence of Dimethyl Sulfoxide (DMSO)–a class C controlled substance–in a sample taken from Seeker's Hope, who finished second at Belmont at the Big A on 5/2/26.06/03/2026, Sergio S. Perez, trainer: Pending medication violation for the presence of Dexamethasone and Methocarbamol–both class C controlled substances–in a sample taken from River's Benchmark, who was second at Turf Paradise on 5/1/26.06/02/2026, Gary Capuano, trainer: Pending medication violation for the presence of Phenylbutazone–a class C controlled substance–in a sample taken from Take a Hint, who won at Laurel Park on 5/3/26.Crop ViolationsBelterra ParkErik A. Barbaran–reporting date June 2; $1,500 fine, three-day suspensionDelawareJose Batista–reporting date June 2; $250 fine, one-day suspensionEmerald DownsLenny A. Seecharan–reporting date June 1; $500 fine, three-day suspensionPrairie MeadowsGlenn W Corbett–reporting date June 1; $750 fine, three-day suspension, on appeal stay requestedPresque Isle DownsIsrael Rodriguez–reporting date June 2; $500 fine, two-day suspensionThistledownAnthony R. Rodriguez–reporting date June 1; $500 fine, two-day suspensionThe post Weekly National Rulings May 29-June 3 appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.