Every week, the TDN posts a roundup of the relevant Horseracing Integrity and Safety Act (HISA) related rulings from around the country. Among this week's rulings, stable employee Gabriel Hilardo Rivera has been issued a six-year suspension and $75,000 fine by the Horseracing Integrity and Welfare Unit (HIWU), after three banned substances were found in his possession back in March. According to the posted final decision, a HIWU investigator "observed Gabriel Hilardo Rivera carry and attempt to conceal a black tackle box behind the rear tire of a vehicle while he was working...