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: 04/07/2026Licensee: Susan L. Crowell, trainerPenalty: A fine of $500; imposition of 1.5 Penalty Points.Explainer: Vets' list medication violation for the presence of Phenylbutazone–a class C controlled substance–in a sample taken from America's Honor on 3/8/26.Dates: 04/07/2026Licensee: Isidro Tamayo, trainerPenalty: 7-day period of Ineligibility for Covered Person, beginning on April 8, 2026; 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 $1,000; imposition of 1.5 Penalty Points.Explainer: Medication violation for the presence of Methocarbamol–a class C controlled substance–in a sample taken from Ballyvaughan Gig, who won at Del Mar on 8/14/25.Dates: 04/03/2026Licensee: Ivan Calderon, 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 Angel Wings, who finished fourth at Mahoning Valley on 2/9/26.Dates: 04/01/2026Licensee: Daniel H. Dennison, 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).Explainer: Medication violation for the presence of Furosemide (Lasix)–a class C controlled substance–in a sample taken from Garavani, who won at Turf Paradise on 1/28/26.Dates: 04/01/2026Licensee: Jenna Antonucci, trainerPenalty: 15-day period of Ineligibility for Covered Person, beginning on April 2, 2026; 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 $1,000; imposition of 2 Penalty Points. Final decision of internal adjudication panel. Case stayed.Explainer: Medication violation for the presence of Lidocaine–a class B controlled substance–in a sample taken from Bee a Queen, who won at Gulfstream Park on 6/14/25.Note: This ruling has been stayed by the Federal Trade Commission pending review by an administrative law judge.Pending ADMC Violations04/08/2026, Jon Zimmerman, trainer: Pending vets' list medication violation for the presence of Acepromazine–a class B controlled substance–in a sample taken from Stormcatsong on 3/5/26.04/08/2026, Jane D. Cibelli, trainer: Pending out-of-competition medication violation for the presence of Altrenogest–a banned substance–in a sample taken from Rhythm 'n Blues on 3/3/26.04/07/2026, Paulina Sinnefia, trainer: Pending vets' list medication violation for the presence of Acepromazine–a class B controlled substance–in a sample taken from President Z on 3/10/26.04/07/2026, Leslielyn Hardesty, trainer: Pending medication violation for the presence of Methocarbamol–a class C controlled substance–in samples taken from That's My Cat, who won at Tampa Bay on 3/1/26; and from Stormey Monday, who won at Tampa Bay on 3/8/26.04/07/2026, Leslielyn Hardesty, trainer: Pending medication violation for the presence of Methocarbamol–a class C controlled substance–in a sample taken from That's My Cat, who won at Tampa Bay on 3/1/26.04/06/2026, Robin Graham, trainer: Pending vets' list medication violation for the presence of Dantrolene–a class C controlled substance–in a sample taken from Not a Bother on 3/7/26.04/02/2026, Arturo Chavez, trainer: Pending medication violation for the presence of Diclofenac–a class C controlled substance–in a sample taken from Sophisticat, who finished seventh at Sunland Park on 3/1/26.Crop ViolationsAqueductJose Lezcano–reporting date April 4; $500 fine, one-day suspensionParx RacingPatrick A. Henry–reporting date April 8; $250 fine, one-day suspensionJean C. Aguilar–reporting date April 6; $500 fine, two-day suspensionAngel A. Castillo–reporting date April 2; $500 fine, two-day suspension, on appealSanta AnitaAntonio Fresu–reporting date April 2; $250 fine, one-day suspensionSunland ParkOscar Andrade–reporting date April 5; $500 fine, one-day suspensionTampa Bay DownsWesley G. Ho–reporting date April 4; $1,000 fine, four-day suspensionMarcos Meneses–reporting date April 3; $250 fine, one-day suspensionTurf ParadisePatrick Valenzuela–reporting date April 2; $250 fine, one-day suspensionThe post Weekly National Rulings: Apr. 2-8 appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.