To those who are concerned that US dairy farmers may be skirting the laws and slipping in some pigs milk:
It is not only that they are forbidden by law, it is also nearly impossible to pull off from a logistical point of view. If you want to worry about something, you can worry about all the goyishe workers in the kosher restaurants you patronize. Despite having multiple reliable hashgochos and a mashgiach t’middi, it is much more likely that something gets slipped in there. Visit a dairy farm, then visit a restaurant kitchen, and rest your own case.