It seems some Latin American scouts for the White Sox were not playing by the rules:

“This is an investigation we brought to Major League Baseball as part of our reorganization in the Dominican Republic,” Williams said. “We now have a new facility, complete with state-of-the art equipment and facilities. We’re trying to achieve greater results down there. We wanted to be sure our operations were consistent with what we stand for. Obviously, they were not in this investigation and we’ve made some changes accordingly.
“As to the what and the why, I’m not at liberty to expound on that.”

Also fired was David Wilder, the director of player personnel.