correspondent chris looks at that now. >> reporter: more than 90 million commenters supported. >> the 87.1% of those comments that we have counted so far and are only missing 4,000 are supportive of this rule. >> reporter: they charged the epa manufactured that overwhelming support through an extraordinary social media campaign. >> when an agency does what happened here which is it propro pros a rule it looks like the agencies is not suggesting input. >> reporter: it allows the comment and alters it based on those comments. last year the epa proposed a regulation to expand its authority under the clean water act.