It could be "Last Roundup" time for the American side if they can't upset the Italians. The teams have met twice in the World Cup. The first time was in 1934 and the Italians won 7-1. They met again in 1990 and Italy won 1-0.
Group E is a bit of a mess now after Ghana shocked the Czechs 3-0 earlier in the day. Italy, Ghana, and the Czech Republic all have 3 points and the USA has none. If the Americans pull off the upset, everybody would tied going to the last match.
But most likely, at the end of the day, Italy will have 6 points and a goal difference of at least +3. The Czechs are at 3 points and +1 and Ghana is at 3 points and 0. Ghana would be able to advance if they could pull off a tie and the Czechs lose by 2 or more to Italy.
If the USA wins, they would still need to beat Ghana in their last match to have a good shot of advancing.