I dare say there may be a few folk in Mobile who disagree with your definition of US-built, but I take your point on wanting to spend US taxpayers' dollars on a US designed and manufactured product.
It's interesting to note though that in a different competition Boeing chose to offer a European product (AW101) to the US President himself, in direct competition to the US product from Sikorsky, so proving their definition of 'US jobs' changes as and when it suits them.
But that's big business the world over I suppose.