Full-back Paul - captain for the tournament - again played his part as Canada cruised past Guatemala in the quarter-finals in Boston on Saturday.
It was Paul's raking pass that led to Ali Gerba setting up Dwayne De Rosario for the opening goal after 17 minutes with a double from Gerba all but settling the issue before the break. The scoreline stayed at 3-0.
Canada, who topped their qualifying group, now face favourites America after the hosts beat Panama 2-1 in their quarter-final, making it four wins in four in the tournament.
That match is at Chicago's famous Soldier Field Stadium - home of the NFL's Chicago Bears - at 6pm local time on Thursday, midnight UK time.
Tom off as U21s progress
Tom Huddlestone and Wayne Routledge were late substitutes as England reached the semi-finals of the European U21 Championship on Sunday. Goalkeeper Ben Alnwick remained on the bench.
However, midfielder Tom received a red card - seemingly for dissent - within minutes of entering the fray in England's 2-0 win against Serbia. Leroy Lita and Matt Derbyshire netted in the the win that took England through to the last four alongside the Serbs, who had already qualifed.
England now face hosts Holland in the semi-final in Herenveen on Wednesday evening, kick-off 5.15pm. The second semi-final is between Serbia and Belgium, also on Wednesday, kick-off 7.45pm.
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Paul Stalteri's Canada will face a showdown with America for a place in the CONCACAF Gold Cup Final in Chicago next week.