By aggregate score about every EU country ranks ahead of the US in the Freedom House Freedom index:
The US comes in at 48th. That's not because it's score is particularly bad, it's because freedom is highly valued and strongly protected in many countries.
The only countries with a perfect score are Finland, Norway and Sweden.
Lobbying universities to not invite, or to rescind invitations from certain people is a bit different. Universities aren't obligated to provide a platform to everyone who might want one. They're educational institutions and probably shouldn't invite speakers whom a majority of their students find offensive unless there's substantial educational value in doing so.
For every guy you put in prison, a hundred will self-censor.