There will be at least one Gold Cup game at RFK.
[edit: there are two quarterfinals on the same day.
Quarterfinals
Saturday, June 18 – New Meadowlands Stadium (East Rutherford, NJ)
Group A runner-up vs. Group B runner-up,
Group A winner vs. Group B/C third-place,
x-matches scheduled for 5 p.m. and 8 p.m. local (5 p.m. and 8 p.m. EDT)
Sunday, June 19 – Robert F. Kennedy Memorial Stadium (Washington DC)
Group B winner vs. Group C runner-up, TBD (y)
Group C winner vs. Group A/B third place, TBD (y)
y-matches scheduled for 3 p.m. and 6 p.m. local (3 p.m. and 6 p.m. EDT)
The USA is almost certain to win group C, so they should be in the second game on 19 June at RFK.