The Constitution says there shall be NO religious test for any position in the govt. Does our side throw the Constitution under the bus when it suits us? People tried to go in this direction when Catholics were new arrivals and their loyalty was suspected.
Playing devils advocate here (maybe), but that only holds if one views Islam purely as a religion.
It no longer holds if one views it as a totalitarian political and economic system that happens to have a religious component.
It would be perfectly acceptable then to employ a test, the same as we would for Communism or Fascism.
No one said he could not be presented as a candidate for the position, barred by a religious test. But as you are probably aware, Islam permits/encourages/requires lying for the advancement of the faith. Therefore nothing a Muslim says can ever be trusted.
The goal of Islam is to rule the world; nothing less is acceptable. Therefore Muslims in government will be working covertly to destroy our system and supplant it with their own. So a vote to confirm a Muslim to a position of authority and power is a vote to overthrow the America we used to know.
Don't ban them, but don't confirm them.