You get arrested if you get caught possessing marijuana in any state of the U.S. Whether you lose your drivers license or not depends on your penalty, and usually your drivers license isn't affected by an arrest.
No.
Short answer, none.
Yes
Yes
Not until the suspension period is over.
No, South Dakota will honor Iowa's ruling. They will not allow you to obtain a license before you could get one in the original state.
60 days
60 days
60 days
death penalty.
Yes, I think you can get it at 14.
It won't revoke your license, but in Iowa you can get your license suspended for multiple MIP's. My brother had 2 MIP's and lost his license for 6 months.