Several Republican presidential candidates have warned of a Muslim plot to force American courts to rule by the religious code. Former Pennsylvania Sen. Rick Santorum recently called it "an existential threat" to the United States; former Minnesota Gov. Tim Pawlenty shut down a program in his state that would allow practicing Muslims to pay for mortgages without violating their religious teachings against borrowing with interest; businessman Herman Cain said he would require Muslims to take an extra loyalty oath to serve in his administration; and former House Speaker Newt Gingrich called for a federal law to ban Sharia from U.S. courts.
