SNTV might be a better fit for the United States, though, because of the issue of minority representation. If minority voters pooled their votes behind one or a few candidates (depending on their proportion of the state's population as compared to the number of seats), they'd be able to elect these candidates despite being a minority of total voters. They wouldn't be able to do this with STV.
This seems inaccurate to me. Say a state is 2/3 Orange and 1/3 Purple, with Oranges preferring Oranges to Purples and Purples vice versa. If we start off with six candidates (three otherwise undistinguished Oranges and three otherwise undistinguished Purples), then in a three-member district STV is still a method for proportionality:
1st round: 2/9 O1, 2/9 O2, 2/9 O3, 1/9 P1, 1/9 P2, 1/9 P3
2nd round: 2/9 O1, 2/9 O2, 2/9 O3, 1/6 P1, 1/6 P2
3rd round: 2/9 O1, 2/9 O2, 2/9 O3, 1/3 P1
4th round: 1/3 O1, 1/3 O2, 1/3 P1
It shouldn't be possible for votes from Oranges to ensure the election of more Orange candidates than would be proportionally assigned.