Infiltrating is certainly legitimate and nobody has said that doing that would make us "no longer America".
Banning mosques is not, and I stand by that. If we decide we can ban religious practice of religions we do not like, no one's practice of religion will ever be safe again. The constitution wisely and explicitly forbids this.
Islam is not a religion. It is a political ideology masquerading as a religion, for the sole purpose of getting away with the crap they are, in countries who are now too PC to separate the two and afraid to "offend" someone's religion.
ISLAM should be banned in the entirety of the United States, as it is antithetical to everything the United States Constitution stands for. The two are not compatible. And anyone who perpetuates, supports, condones, and adheres to the teachings of Islam, and refuses to denounce it upon arrival into the US, should not be allowed INTO the United States, because their whole entire belief system, political system, laws and practices, are antithetical to the belief system, political system, laws and practices (i.e. the United States Constitution) of the United States. They do not come here to ASSIMILATE. They come here to INFILTRATE.
What part of that, do you NOT get?