You can't deduct contributions to foreign organizations other than certain Canadian, Israeli, or Mexican charitable organizations. You can't deduct a contribution you made to any qualifying organization if the contribution is earmarked to go to a foreign organization. However, certain contributions to a qualified organization for use in a program conducted by a foreign charity may be deductible as long as they aren't earmarked to go to the foreign charity. For the contribution to be deductible, the qualified organization must approve the program as furthering its own exempt purposes and must keep control over the use of the contributed funds. The contribution is also deductible if the foreign charity is only an administrative arm of the qualified organization.
Canadian charities. You may be able to deduct contributions to certain Canadian charitable organizations covered under an income tax treaty with Canada. To deduct your contribution to a Canadian charity, you must generally have income from sources in Canada. See Pub. 597, Information on the United States–Canada Income Tax Treaty, for information on how to figure your deduction.
Mexican charities. Under the U.S.–Mexico income tax treaty, a contribution to a Mexican charitable organization may be deductible, but only if and to the extent the contribution would have been treated as a charitable contribution to a public charity created or organized under U.S. law. To deduct your contribution to a Mexican charity, you must have income from sources in Mexico. The limits described in Limits on Deductions, later, apply and are figured using your income from Mexican sources.
Israeli charities. Under the U.S.–Israel income tax treaty, a contribution to an Israeli charitable organization is deductible if and to the extent the contribution would have been treated as a charitable contribution if the organization had been created or organized under U.S. law. To deduct your contribution to an Israeli charity, you must have income from sources in Israel. The limits described in Limits on Deductions, later, apply. The deduction is also limited to 25% of your adjusted gross income from Israeli sources.