” However freedom of speech still exists unless you say something untrue”
Under US law you can even say things that are false; although you might get sued you won’t be imprisoned. However, while secular law has no penalties against false and defamatory attacks on against public figures unless they are made with actual malice, halachah may be a lot more strict here. The motzi shem ra that Obama is either a Marxist, or a Muslim, or not born in the US would seem to be particularly problematic.