These powers include trade regulation within a state's boundaries, law enforcement, local elections, and licensing. However, it has been alleged that, beginning from the early 20th century, these powers have been gradually reduced, or taken over by the federal government via successive amendments.
They restrict the number of children a family can have, as well as (recently) not allowing refugees to enter their country. The biggest precaution is the amount of children laws.
Answer:
I think they were called "forty-niners".