While Immigration Policy Is Widely Viewed as Being Under the Control

While immigration policy is widely viewed as being under the control of the federal government, why did several states enact their own immigration laws?

A) They viewed the current national immigration policy as too lenient.
B) New immigrants had become a burden on the states' welfare budget.
C) Clarification of the national immigration policy was needed.
D) It was due to inaction at the national level related to immigration policy.
E) Congress initiated legislation to allow states power to draft immigration policy.