The Big Ten sent a letter to the NCAA this week asking the organization to put a halt to "investigations and infractions proceedings" related to tampering, according to a copy of the letter obtained by ESPN. The letter states that the "current framework" for tampering rules "cannot be credibly or equitably enforced," pointing out the rules for tampering were designed before a modern era that includes paying athletes and essentially unlimited transfers. "These rules were not designed for a world in which student-athletes are compensated market participants making annual decisions with significant economic consequences," the letter reads. "The collision between the old rules and new reality is producing outcomes that harm the population that the rules were designed to protect." The letter comes in the wake of a flurry of recent tampering headlines. That included the NCAA seeking to impose significant penalties against tampering offenders.…