.MASSHOLE.For anyone wondering here are the four scenarios the US needs.
US win/draw
Loss by 1 or 2 goals with a Portuguese win by less than 2 goals
Loss by 1-2 goals with a draw
Loss with Ghana win by 1 goal.
tie breakers are based on total goal differential in the group, not goal differential between the tied teams. if the total differential is tied, it is determined by greatest amount of total goals.
the rules in their entirety here.
"The ranking of each team in each group shall be determined as follows:
a) greatest number of points obtained in all group matches;
b) goal difference in all group matches;
c) greatest number of goals scored in all group matches.
If two or more teams are equal on the basis of the above three criteria, their rankings shall be determined as follows:
d) greatest number of points obtained in the group matches between the
teams concerned;
e) goal difference resulting from the group matches between the teams
concerned;
f) greater number of goals scored in all group matches between the teams"