Relating to the authority of the legislature or a state court to declare certain federal actions to be unconstitutional federal actions, including the effect and enforcement of such a declaration.

HB 78, the Texas Sovereignty Act, would authorize the Texas legislature or state courts to declare certain federal actions unconstitutional, based on the bill's interpretation of the U.S. Constitution. The bill's preamble argues that federal powers are limited to those explicitly delegated in the Constitution, with all other powers reserved to the states under the Tenth Amendment. It establishes a framework for making such declarations and specifies their legal effect and enforcement within Texas. This bill directly affects Texas's legal relationship with the federal government and could influence how federal laws are applied in the state.