Depends on the family - there are so many types of American it's a hard question. Some families think it's taking care of each other, loving each other and sticking together no matter what' some...
Love & affection towards all the family members
helping others when they are sick and tired,
taking lead during difficult period,
respecting elders, and having unity
Love Them. Family are the people who often know you the best and have been with you the longest. They understand you at a very fundamental level and love you unconditionally.