FAA x-wind limits
Recently arriving in BOS, they were using runway 27 (mostly, but offering 22L as well).
The winds were 20027/38 and US operators (most) were landing on 27. We chose to go for 22L as our crosswind limit is 30 kts (gusts included).
What does the FAR say about gusts in such cases? Can you legally ignore the gusts as they seemed to be doing?