Several Islamic so-called "charities" have been shut down and their officers indicted, since September 11th 2001, for funneling money to terrorists.
That is not a problem. Indeed, it is a Good Thing.
The serious proposals bandied about by some posters here, though, of making Islam illegal in the United States, and of "invading their countries, killing their leaders, and converting them to Christianity" overseas, however, are unacceptable.
Nazism is illegal in Germany, it is not a crime in America. Neither is communism, anarchism, or Islamofascism although all three preach sedition.
There have been periods in American history when there have been laws against sedition but they are repealed when the threat has passed.
Interesting little defense mechanism in Islam; when a nation prohibits the exercise of the faith, all Imam agree that is the clear sign that physical holy war/jihad may be waged against a country.
Why?