You Do Need power plug adapter while traveling from Iraq to American Samoa.

Here is Why You Need An Adapter

The outlet and plug type used in American Samoa are A, B, F and I and in Iraq are C, D and G. This is how they look like.

Iraq

In Iraq, outlets of type C, D and G are in use.

Type C

Type D

Type G

American Samoa

In American Samoa, outlets of type A, B, F and I are in use.

Type A

Type B

Type F

Type I