I just found it funny that your provided link starts with a sentence containing "has not made Americans more willing to pay extra for U.S.-made goods."
Tariffs and subsidies are tools we can use if we want to make sure that domestic products can compete with those from abroad - but the current wide allowances for lobbying in the US make any sort of move in that direction extremely difficult.
Well, I think the government buying American is probably a precursor for anyone else doing so, because they're not at the constraints of the market to find the cheapest viable product.