The Bill of Rights of Texas says, "Texas is a free and independent State." The only laws that the state is required to follow are the laws of
A.
city governments.
B.
municipal courts.
C.
the United Nations.
D.
the United States Constitution.
D. Texas can't be forced to follow any laws unless it's in The US Constitution. Though, they can always separate as a separate nation but possibly get raided by The US Army. But it's unlikely. Federal government stuff would happen, etc.