Roger Warren's team celebrated reclaiming the Llandudno Trophy by a 13½-12½ scoreline.
Great Britain & Ireland's spirited bid to retain the PGA Cup ended in the narrowest of defeats as they came up an agonising half a point short at the Oconee Course in Georgia.
Gary Alliss's team, seeking an historic first win on American soil, emerged with all guns blazing during a pulsating final day's play to win the singles 5½-4½.
But the US's two point overnight lead proved decisive, sparking jubilant scenes on the 18th as Roger Warren's team (above) celebrated reclaiming the Llandudno Trophy by a 13½-12½ scoreline.
The match hung on a knife-edge for much of a gloriously hot afternoon at the Reynolds Plantation but Ryan Benzel's gritty comeback against Paul Wesselingh plunged a dagger into the GB&I bid.
Benzel (pictured), the baby of the US team at 28, came back from three down including birdies on 17 and 18 to snatch a vital half.