Part of the reason why people took the oath on the bible was because we were a largely Christian nation and the bible explicitly says you shall not bear false witness (lie). There are no "but ifs" or conditions to this statement unlike the Quran (Taqiya). Therefore taking an oath on the Bible or Quran for a muslim is worthless since they are allow to lie (Taqiya) if the believe they are serving their god by doing so.