They then ranked ISPs by how many attempted TCP connections were interrupted by reset packets. And guess who is at the top of the list.
If you said "Comcast," you guessed correctly. According to the Vuze people's initial results, the number of reset connections was 20 percent for that ISP's subscribers.
Vuze says some ISPs abuse TCP resets; data not that clearcut
Well, they are a bit of a biased source– but this is certainly a limit on the internet – censorship in a form not quite as extreme as China's but certainly uncalled for. It is reasons like this that we need government regulation on the internet.
The technology is 15 years old at this point. For a country that depends as heavily as they do on the internet, the US, the internet is still a wild-west of legality.