The last time I checked, no one in the U.S. is being punished for what they believe or for expressing that belief. So what's the fuss about? It's not a concern that people can't express their own beliefs. No, it seems to be a concern that people will not have the license to impose their beliefs on others.
Christian advocates are keen on getting recognition that the Christians faced genocide. They think it is the only way to get relief for Iraqi Christians, mainly through resettlement asylum outside the region. They are asking Secretary of State John Kerry to meet with them and hear their argument. It is sad that it has come to this.