I am scratching my head too. This very idea that people who practice a different religion shouldn't have the freedom of religion goes against everything that the Constitution of the United States stands for. It is one of the main principles that makes this country so amazing. It is one of the reasons why everyone wants to come to America.
If this viewpoint were actually made into law, America would no longer be a democracy. It would turn into a theocracy, like Saudi Arabia and Iran. The only difference is that it would be a Christian theocracy instead of a Muslim one. It would be just as bad. History shows us this. Any group that retains too much power will enforce laws as they see fit. Maybe the Christian majority in this country wouldn't mind it so much, but when one fundemental right gets taken away, the rest will soon follow. At that point it will be too late.
Fortunately for this man, the 1st Amendment also guarentees freedom of speech. This man has every right to express his views, however radical they may be. Another thing that makes America so great is that we have a system of checks and balances which (in theory) prevents radical viewpoints like these from becoming law.
I love America.