The USA, still struggling to find their form in the tournament, was held to a frustrating draw by Portugal following their previous match against the Netherlands.
This latest result has raised doubts about their chances of securing an unprecedented third consecutive tournament victory.
Portugal came close to causing a major upset, with Ana Capeta hitting the post in the 91st minute.
The USA breathed a sigh of relief when the final whistle blew, as the single point earned was enough to secure their spot as runners-up to the Netherlands, who had a resounding 7-0 victory over Vietnam.
However, the United States once again failed to deliver its best performance, struggling to break through Portugal’s determined defense.
Goalkeeper Ines Pereira made two exceptional saves to deny Lynn Williams, who had been recalled to the team.
As the world’s number one side, the USA will now face the winners of Group G, which will be determined on Wednesday.
Sweden, the last nation to defeat the USA in a 90-minute World Cup game, is expected to finish at the top unless there is a significant 10-goal swing.
It was a bitterly frustrating night for the four-time world champions in Auckland, as midfielder Rose Lavelle received a booking, resulting in her absence from the next game after accumulating her second caution of the tournament.