A rally by Britain and Ireland means the United States take a one-point lead into the final day of the Curtis Cup.
The visitors extended their overnight advantage by winning two of the morning foursomes in cold and wet conditions, before the hosts took two and a half points from the three afternoon fourballs at Nairn Golf Club.
It means the US have a 6.5-5.5 advantage as they seek an eighth successive victory in this event.
Match 1: Pamela Pretswell & Charley Hull (Gbr & Irl) lost to Amy Anderson & Tiffany Lua (USA) 3 & 2
Match 2: Holly Clyburn & Amy Boulden (Gbr & Irl) lost to Austin Ernst & Brooke Pancake (USA) 2 up
Match 3: Stephanie Meadow & Leona Maguire (Gbr & Irl) bt Lindy Duncan & Lisa McCloskey (USA) 3 & 1
Match 1: Holly Clyburn & Kelly Tidy (Gbr & Irl) bt Brooke Pancake & Erica Popson (USA) 1 up
Match 2: Leona Maguire & Bronte Law (Gbr & Irl) level with Austin Ernst & Brooke Pancake (USA)
Match 3: Stephanie Meadow & Pamela Pretswell (Gbr & Irl) bt Tiffany Lua Erica Popson (USA) 2 up
Overall score after day two: USA 6.5 Great Britain & Ireland 5.5