I'm not aware of any specific "hate speech" laws being introduced into the US. I do know that many Christian nations (as in those that are or have been run by Christian religions) usually have laws against blasphemy, which is a law against speaking against a religion or certain parts of a religion. Now, there are some countries now that are banning hate speech by anyone. But this should also include hate speech against Christians. I don't really agree with such laws, but they are not being used (or shouldn't be) against just Christians. Everyone is subject to those laws.