"Walker said he used his actual street address in England but entered Arkansas as his state with the Schenectady, NY, ZIP code of 12345."
In fairness, that's fraud on Walker's part not on the Obama campaign's part. There's a limit to what kind of checks you can feasibly do. By the sounds of it, requiring a billing address in the United States seems reasonable.
"Walker said he used his actual street address in England but entered Arkansas as his state with the Schenectady, NY, ZIP code of 12345."
In fairness, that's fraud on Walker's part not on the Obama campaign's part. There's a limit to what kind of checks you can feasibly do. By the sounds of it, requiring a billing address in the United States seems reasonable.