It's a shame there isn't more language education in the US. We had one class on a foreign language starting in sixth grade, which is pretty late.
Most things here are mono lingual. I visited Montreal and I feel like if I was there for a few months, my rudimentary French would really develop. Unfortunately, the one time I tried to speak to someone there who didn't speak English, it didn't go super well. She was patient, but we weren't really understanding each other. All my French is reading and writing, so I have an incredibly bad accent.
Most of them won't learn anything. If they were capable of learning, they've had ample time to do so.