Former Beaumont ISD contract electrician Calvin Walker wants the highest court in the nation to determine whether state prosecutors can try him on charges similar to the ones he fought in federal court in 2012.

In a petition filed with the U.S. Supreme Court on Nov. 10, Walker asks the eight justices to review the government-claimed exception to Walker’s constitutional protection against being tried twice for the same crime. Under the exception, two different government entities can try the same person for a crime as long as one case does not operate as an extension of the other.

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“This case presents important questions concerning the scope of this vital guarantee (against double jeopardy),” wrote Jeffrey Fisher, an attorney for Walker and the co-director of the Stanford Law School Supreme Court Litigation Clinic, in the Nov. 10 petition.

Attorneys from Dick DeGuerin’s Houston law firm, who previously handled Walker’s criminal cases, recently sought Fisher’s involvement.

Fisher in an email Monday called Walker’s case “a worthwhile project.”