I discovered on Monday at the Illinois Legislative Reference Bureau that one of the most common drafting errors is to use “forego” when “forgo” should be used. A check with Garner's Dictionary of Legal Usage confirms this.

According to Garner, “Forego means to go before. Forgo means to do without; to pass up voluntarily; waive; renounce.” (Garner’s Dictionary of Legal Usage, p. 371).

You learn something every day.