If the September 11th attacks WERE an 'inside job', what is the lowest number of people who would be involved?

The entire American Government for not closing the borders they were smart enough to know what they were doing to your nation. You never know who is going to win the next green card and how they feel about America. Have you got a boyfriend? Or is that a fake photo?

You make a fine point..unfortunately it is completely wrong. The amount of people who knew for example about the Gulf of Tonkin incident and kept quiet about it for 40 years (only coming to light in 2005)kinda proves governments can keep conspiracies quiet for a very long time...

1964 Gulf of Tonkin incident

On August 4, 1964, North Vietnamese ships had allegedly attacked US destroyers, in what has come to be known as the Gulf of Tonkin Incident which led to Lyndon B. Johnson to drastically increase troop levels in Vietnam. On November 30, 2005, the National Security Archive released hundreds of pages of documents revealing that President Johnson was shown only selective intelligence and that the August 4th attack in all likelihood never occurred.

Oh come on. This is a myth. You may not like G.W. but what would be his purpose. Those responsible have admitted to it. Your question is lacking.

There was no inside job conspiracy, you are wasting your time.