Markey: Make sure Comcast-NBC merger does not create 'fast lanes' on Internet

"The issue before us really boils down to the seven C's--Will this Combination of Communications Collossi Curtail Competition and Cost Consumers?" he said.

"That is the question that must be answered as this process moves forward."

A big proponent of net neutrality, Markey said he wants to ensure that the "combination of a major network operator and a large content owner does not enable the creation of discriminatory fast lanes and slow lanes on the Internet to the detriment of users."

"Control of both the content itself and the conduit through which it is delivered rasies important issues with respect to competition, choice, diversity and innovation," he said.