As the 20th anniversary of September 11 approaches, a Fox News Poll found that two-thirds (64 percent) of registered voters think the 9/11 2001 terrorist attacks permanently changed the way we live in the United States.

As the 20th anniversary of September 11 approaches, a Fox News Poll found that two-thirds (64 percent) of registered voters think the 9/11 2001 terrorist attacks permanently changed the way we live in the United States.