The current issue about to be decided by the Senate is "net neutrality". Traffic on the Internet today in America is completely open. Isp's are obligated to direct all traffic they receive. If this is no longer the case, they will be allowed to decide on a content basis, what they show users and what they don't. Competitor's Websites could then be blocked, or sites with an undesired political opinion.
This post at Seeing the Forest
describes what will very likely be the result.