When grants or gifts cannot be made directly to a recipient (individual or organization) many times Fiscal Agents are used. These Intermediate charities are commonly referred to as Conduit Organizations because they are not the intended final recipient, rather just a pass-through.
With the right due diligence, control, and by-laws, this type of seemingly-indirect charity can be perfectly legal and advisable. (Please consult your lawyer to see if this solution is right for you or your organization.)
One such group that uses Conduits is such a way, is a charity located outside of the United States (and, thus, not considered tax-exempt in the eyes of the IRS) that is looking to collect donations from American citizens.