David Schweikert (R-AZ) - Does Iran pose a significant threat to America's national security?

Schweikert urges firm stance toward Iran.

Sounds like a yes to me:

What should the United States do about Iran's nuclear ambitions?

 The United States needs to expand its unilateral and bilateral sanctions policy. We need to continually increase the isolation of Iran until it ends its pursuit of nuclear weapons. The military option must remain available even though it is the last resort.