I am not suggesting Arab Christians in the United States stand up as Christians to prove their loyalty to the country, or to prove that they are not a danger. Please read the posts again. Key words are words like WITNESS and IMPACT. I believe a more open witness by them would have a great evangelistic impact on the Muslim portion of Arabs in this country.
I am not sure I can agree that atheists are not a danger to our country, but I don't think that athiests, per se, are necessarily the same KIND of danger. I nevertheless uphold any man's right to be an atheist, and I claim my Christian duty to attempt to win them to Christ.