With a 7-6 (4), 6-4 win from Madison Keys over France's Pauline Parmentier, the United States booked a spot in the Fed Cup final.
It marks the United States' seventh straight win, and second final in a row after winning it all last November.
Before Keys clinched the tie, Sloane Stephens scored her second singles win of the weekend by brushing aside Kristina Mladenovic 6-2, 6-0.
Keys win made it 3-1 for the U.S. before a dead doubles rubber was played. CoCo Vandweghe and Bethanie Mattek-Sands would fall in a deciding tiebreaker to Amandine Hesse and Mladenovic.
The U.S. team will play the Czech Republic in November for a shot at their second straight Fed Cup crown.
“She wore her scars as her best attire. A stunning dress made of hellfire” - Daniel Saint ???? Everyone of these girls have come across challenges that they chose to confront head on... They walked through the fire and came out stronger and more inspired on the other side... #StrongIsBeautiful ???? #MotivationMonday ???????? #TeamUSATennis ???? #GirlsNightOut ???? #Inspired ????
The support for Team USA was strong, from players on the team and watching from home:
The Czech Republic is regarded as a powerhouse in Fed Cup, having won five times since 2011. The final will be an away tie for the United States.