England registered a clean sweep against Thailand in Saturday's fourballs at the UL International Crown to finish top of their pool.
Jodi Ewart Shadoff and Holly Clyburn recorded a 7&5 victory over Pornanong Phatlum and Porani Chutichai, and Mel Reid and Charley Hull beat Ariya Jutanugarn and Moriya Jutanugarn 3&1.
Hull had missed play on Friday because of asthma and a fever.
Victory saw England advance to Sunday's concluding singles in Illinois.
The country with the highest point total from the four days of competition will win the title of the best golf nation in the world after the end of the 10 singles matches.
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