(UTC) 
 :Perhaps the acronym redirection should be expanded, as there are now several commonly used acronyms: USC, USCR, TUSCC, TUSC... Officially, the acronym seems to be TUSC (at least for as long as Tudor is the sponsor). TUSC is mentioned in the rulebookhttp://www.imsa.com/sites/default/files/uploads/2014%20IMSA%20TUDOR%20Championship%20Rules%20010514.pdf.   23:42, 7 February 2014