Saudi Arabia represents about 10% of our imported oil. Canada provides almost twice a much. And you can add Nigeria to the top five. Saudia Arabia, Mexico, and Venzuela are roughly the same in terms of imports.
I'm not sure where you get that math. Saudi Arabia provides 15% of our imported oil, Canada provides 19% or about 28% more than Saudia Arabia. Most of our imported oil comes from OPEC.
10,092 MBPD All Countries
5,417 MBPD OPEC
4,675 MBPD Non OPEC
2,147 MBPD Persian Gulf
1,882 MBPD Canada
1,465 MBPD Saudi Arabia
1,386 MBPD Mexico
1,173 MBPD Venezuela
1,028 MBPD Nigeria