Building a start-up as an observant Muslim in Philadelphia presents unique challenges, from identifying financial practices acceptable under sharia law to deciding whether and how to compromise on selling forbidden wares such as pork, lottery tickets, and alcohol. But it also presents unique opportunities. Among them could be a market for the region's first Muslim credit union. The U.S. lags far behind other countries when it comes to the Islamic-finance sector. Only a handful of American banks have begun offering sharia-compliant home mortgages. A credit union could assist with many of the financial needs of Muslims in the USA.