The United States hasn't yet clinched a spot in the semifinals. After the win on Thursday, I was talking to a colleague about how the U.S. has moved on and that the game against Honduras was for positioning. The colleague pointed out that Cuba could still advance at the United States' expense with a win over Panama and a Honduras win over the U.S.
Likely scenario? Of course not. Technically possible? Barring another mass defection, yes.