I’m pretty sure the answer is C. (According to process of elimination)
They declared war on May 13, 1846!
(C)
It was part of an Act that was passed, that provided Prosecution of a war that was already between U.S. and Mexico.
The supremacy law that establishes the federal government establishes that the state governments must be subordinate to the federal authority. In line with this law, whenever the interests of the federal government collide with those of state governments, the interest of federal government shall always supersede.
<span />
I'm pretty sure its D not fully sure