Terrorism is committed in America, by many different people, not just Muslims. There are about 3.5 million Muslims in America. If only 1/10th of 1% of those 3.5 million Muslims in America were terrorists, we would have 3500 terrorists around the country, going postal, running over pedestrians with their vehicles, planting exposives around the country, blowing themselves up..etc. It would be a national crises, requiring the deployment of the National Guard and perhaps even the active military. This hasn't happened yet and seeing that it hasn't, even when the US government was warmongering in the Muslim lands, like in Iraq, Libya, Syria, conducting its own form of terrorism/warmongering, we didn't see American Muslims go postal.
There are many Muslim Americans, some even serve in our military. The implication that Muslims can't be Americans, is simply a hateful, bigotted, racist, and idiotic.