Former Lieutenant Governor Lise Thibault  is asking the Supreme Court to put an end to her fraud trial.

Thibault has been charged with fraud and forgery in connection with some $700,000 in personal expenses while in office between 1997 and 2007.

Thibault has argued that as the Queen's representative she is immune from prosecution.

The Quebec Court of Appeal rejected that argument in December.

Her lawyer has now filed an appeal with the Supreme Court of Canada.

The trial is scheduled to begin March 4th, but Ttibault will ask for a postponement pending the outcome of the appeal to the high court.