Who can trigger a review on pass interference? Why NFL coaches are worried

As spring turns into summer, a fierce debate is raging among NFL decision-makers: Who should stop the game to review a potential pass interference penalty, and when?

The question might seem minor, but it pushes to the core of whether expanded replay can be effective at the NFL level. And for the second consecutive year, the league's competition committee is attempting to reverse-engineer a major rule change.

The new process for reviewing pass interference, approved by owners in March, followed the structure of the existing system. Coaches would challenge calls until the two-minute warning of either half, after which responsibility would be shifted to the on-site replay official. While coaches…