A Texas state lawmaker plans to introduce legislation that would make it illegal for officials to enforce any measures approved by President Obama or passed by Congress that ban so-called assault weapons or limit the capacity of gun ammunition clips, a San Antonio radio station reports.

Republican Rep. Steve Toth told WOAI 1200-AM that his Firearms Protection Act will make trying to enforce a federal gun ban in the state subject to a $50,000 fine and up to five years in prison.

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He plans to file the measure after speaking with state Attorney General Greg Abbott.

“At some point there needs to be a showdown between the states and the federal government over the Supremacy Clause,” Mr. Toth said. “It is our responsibility to push back when those laws are infringed by King Obama.”