If you want to help Prince William and Catherine Middleton celebrate their upcoming April 29th nuptials, then consider a charitable donation. The couple has set up a special fund of 26 charities that represent 5 different causes such as Children Fulfilling Their Potential and Conservation for Future Generations. Most of these charities are based in other countries such as New Zealand and Canada. So, U.S. taxpayers may not want to give through the fund, but rather be inspired by the fund. Why? Because gifts to non U.S. charities are not tax deducible. To remedy that, instead give to one of the 5,500 U.S. 501 (c ) (3) public charities rated by Charity Navigator.